Bullseye Precision Vacuum Gauge
Pickup available at Botanical Health Oils Hardware Barnsley
Usually ready in 24 hours
Shipping & Returns
Delivery
Our current shipping rates are as follows:
UK Orders Over £50 – Free Next Day Delivery
UK Orders Under £50 – £8 (Next Day Delivery)
UK Orders Next Day AM – £20
UK Orders Saturday AM – £30
International Orders – £25 Flat Rate
All parcels are fully tracked. Once your order has been dispatched, you’ll receive an email containing your tracking number.
If your order weighs over 30 kg, additional shipping costs may apply.
Returns
We want you to be completely satisfied with your purchase from Botanical Health Oils Hardware Ltd, but if you change your mind, you may cancel your order within 14 days of receipt for a full refund, provided the items are unused and in resalable condition.
Once your cancellation has been confirmed, you must return the items within 14 days, ideally in their original packaging.
If you experience a technical issue with a product, please contact our team on 0114 229 1807 or email orders@bhohardware.com
Click & Collect
Order online and collect directly from our Barnsley store. Once your order is ready, you’ll receive an email or phone confirmation with collection details. Please wait for confirmation before travelling to ensure your order is prepared.
Collection Address:
Botanical Health Oils Hardware Ltd
Unit 6, Rockingham Business Park
Rockingham Row, Birdwell
Barnsley, S70 5TW
Opening Hours:
Monday to Saturday: 10:00 AM – 6:00 PM
Closed Sunday and bank holidays
Important Notes:
Orders are typically ready within 1–2 working days (subject to stock availability).
Please have your order number ready to give to a member of staff when you arrive.
For assistance, contact orders@bhohardware.com
Discreet Shipping
All orders from Botanical Health Oils Hardware Ltd are packed securely and shipped in plain, unbranded boxes for your privacy. We understand that discretion is important, so no external markings or product details are visible on the packaging.
Each parcel is also wrapped in durable black film and sealed with fragile tape to ensure both security and protection in transit.
We take great care to make sure your order arrives safely, discreetly, and in perfect condition — every time.
If you have any special delivery instructions or packaging preferences, please contact us after placing your order at orders@bhohardware.com
Methods of Payment
We accept a wide range of secure payment options for your convenience when shopping with Botanical Health Oils Hardware Ltd.
You can pay using:
Visa, Mastercard, American Express, and Discover
Apple Pay, Google Pay, and Shop Pay
PayPal – Fast and secure online checkout with buyer protection
Klarna – Flexible payment options, including Pay in 3 instalments or Pay Later
Clearpay – Split your purchase into four interest-free payments
Western UnionPay – Supported for international customers
Cash in the Post
This is at your own risk! (Tracked Only) – Payment must be sent using a tracked or signed-for postal service for security
All transactions are processed securely through Shopify’s encrypted checkout. Your payment details are never shared directly with us.
Once your order is placed, you’ll receive an order confirmation email, followed by tracking details once your parcel has been dispatched.
For payment or billing assistance, please contact orders@bhohardware.com
Finance Options
At Botanical Health Oils Hardware Ltd, we offer flexible finance options to make purchasing easier. You can choose to spread the cost of your order using Shop Pay Instalments, PayPal Pay in 3, Klarna, or Clearpay. All options are interest-free and give you the flexibility to manage your payments in a way that suits you.
Shop Pay Instalments
Shop Pay Instalments allows you to spread the cost of your purchase into 4 equal interest-free payments, taken automatically every two weeks. There are no hidden fees, and approval is handled instantly at checkout. Payments can be managed easily through your Shop Pay account.
PayPal Pay in 3
PayPal Pay in 3 allows you to divide your purchase into three equal interest-free payments over two months. The first payment is made at checkout, followed by two automatic payments each month. It is available on orders between £30 and £2,000, and approval is completed instantly through your PayPal account. You can view, manage, or make payments easily through the PayPal app or your online account.
Klarna
Klarna offers two flexible ways to pay. With Pay in 3 instalments, your order total is divided into three equal payments, taken every 30 days with no interest or fees when paid on time. Alternatively, you can choose Pay Later in 30 Days, allowing you to receive your order first and settle the balance within 30 days. Klarna provides instant approval at checkout, and all payments can be managed securely through the Klarna app.
Clearpay
Clearpay lets you spread the cost of your purchase into four equal interest-free payments, taken automatically every two weeks. The first instalment is paid at the time of purchase, and the remaining three are collected automatically over six weeks. Clearpay is available for orders between £30 and £1,000 and can be managed easily through the Clearpay app.
Important Information
All finance options are subject to eligibility and approval by the provider. Late or missed payments may affect your credit score, so please ensure funds are available when payments are due. For details about eligibility, limits, or payment schedules, please refer to the provider’s website or app.
If you need assistance with your order or help selecting the right payment method, please contact our team at orders@bhohardware.com
Earn Points & Rewards
At Botanical Health Oils Hardware Ltd, we believe loyalty should be rewarded. Our Points & Rewards scheme allows you to collect points every time you shop and redeem them for discount codes to use on future purchases.
When you make a purchase through our website, you’ll automatically earn 5 points for every £1 spent. These points are added to your account and can be saved or redeemed whenever you choose.
Once you’ve collected enough points, you can exchange them for discount rewards such as:
500 points = £5 off
1,000 points = £10 off
2,000 points = £20 off
Your points never expire as long as your account remains active, and you can track your balance easily through your customer account dashboard. It’s our way of saying thank you for choosing Botanical Health Oils Hardware Ltd.
To redeem your points, simply log into your account, view your available balance, and follow the on-screen instructions to generate a discount code. Enter the code at checkout to instantly apply your reward.
If you have any questions about collecting or redeeming points, please contact our support team at orders@bhohardware.com
Bullseye Precision Vacuum Gauge - Sensor Upgrade Available
Accurate Monitoring • Complete Upgrade Kit • KF25 Ready
Description
The Bullseye Precision Vacuum Gauge is a high-accuracy instrument designed to measure and monitor vacuum pressure levels in various applications, including scientific research, industrial processes, and laboratory settings. This version is provided without a sensor, allowing users to pair it with their preferred compatible sensor for customized vacuum measurement solutions.
Bullseye Key Features
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High Precision Measurement: Capable of detecting minute fluctuations in vacuum pressure, ensuring accurate readings for sensitive applications.
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Versatile Display Options: Features a clear, easy-to-read digital display with multiple viewing modes, including numeric, bar graph, and pump-down displays
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Wide Measurement Range: Designed to measure pressures in the high vacuum or ultra-high vacuum range, from atmospheric pressure down to extremely low pressures in the torr, pascal, or millibar range.
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Rugged and Portable Design: Built for field use with a durable casing and a strong magnet for hands-free operation.
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Extended Battery Life: Operates up to 70 hours on AA batteries, ensuring reliability during extended use.
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Field Calibratable: Allows for on-site calibration to maintain measurement accuracy over time.
Bullseye Specifications
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Display: Digital with numeric and graphical modes
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Measurement Units: Supports multiple units, including Torr, mbar, kPa, millitorr, microns, inches of Hg, mm Hg, inches of water, PSI, and Pa
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Power Supply: AA batteries (up to 70 hours of operation)
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Dimensions: Approximately 11 x 10 x 4 inches
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Weight: Approximately 2 lbs
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Sensor Compatibility: Compatible with various thermocouple vacuum sensors
KF25 Sensor Key Features
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Wide Measurement Range: Measures from 1 x 10⁻³ to 760 Torr, suitable for various vacuum applications.
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KF25 Flange Compatibility: Standard KF25 (NW25) flange ensures easy integration into existing systems.
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Durable Construction: Made from 304L stainless steel with a Platinel filament for enhanced durability.
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Integrated Baffle: Protects the sensor from condensable gases, extending its operational life.
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Reliable Performance: Factory-calibrated for consistent and accurate readings over time.
KF25 Sensor Specifications
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Flange Options: NW16/KF16 or NW25/KF25 flange
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Material: 304L stainless steel with an added baffle to extend tube life
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Total Range: 1 millitorr to 760 Torr
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Range with Accuracy: 0.001 Torr to 6 Torr
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Maximum Bake-Out Temperature: 150 °C
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Construction: Welded stainless steel with a baffle for extended life in demanding applications like distillations, vacuum processing, and laboratory research using schlenk lines
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Performance: Continuous and repeatable pressure indication
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Sensor Components: Noble metal thermocouple and heater to minimize contaminant effects on performance
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Certifications: CE Certified and RoHS compliant
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Part Numbers:
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536 KF25 – Part Number: L6141309
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536 KF16 – Part Number: L6141308
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Compatible Gauges:
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Bullseye Precision Gauges
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StrataVac Multi-Gauge Controller
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DigiVac Vacuum Gauges and Controllers
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Applications
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Scientific research in fields like physics, materials science, and nanotechnology
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Industrial processes, including semiconductor manufacturing and food packaging
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Laboratory settings for material deposition, testing, and electron microscopy
Operational Guidelines
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Sensor Integration: Connect a compatible thermocouple vacuum sensor to the gauge for accurate pressure measurements.
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Powering the Device: Insert AA batteries to operate the gauge; monitor battery levels regularly.
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Display Modes: Utilize the various display options to monitor vacuum levels and system performance effectively.
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Calibration: Perform field calibration as needed to ensure ongoing measurement accuracy.
Bullseye Precision Gauge
A rugged portable vacuum gauge for processing applications that pairs unparalleled vacuum measurement comes with the Agilent 536 sensor that has an integrated baffle which provides protection and helps reduce risk of sensor failure. Accuracy .001 Torr to 6 Torr.
DigiVAC
Bullseye Precision Gauge Portable Vacuum Gauge Features:
A rugged portable vacuum gauge for processing applications that pairs unparalleled vacuum measurement with the Agilent 536 sensor that has an integrated baffle which provides protection and helps reduce risk of sensor failure.
- See vacuum readings in either numbers or easy-to-read graphs
- Has 12 measurement units for implementation in almost any vacuum application
- Torr, mbar, bar, kPa, inches of Hg, mm Hg, millitorr, microns, inches of water, PSI, Pa
Numeric & Graphical Displays
See vacuum readings in either numbers or easy-to-read graphs
Has 12 measurement units for implementation in almost any vacuum application
Torr, mbar, bar, kPa, inches of Hg, mm Hg, millitorr, microns, inches of water, PSI, Pa
Calibrated & Precise
Delivered pre-calibrated with Agilent/ Varian 536 thermocouple sensor under actual vacuum against the NIST standard.
The 536 all stainless steel sensor with baffle has extended sensor life in the presence of condensable gases and improved performance at higher pressures
Vacuum Interface: KF25 or NPT or KF16 | optional purchase with the Stainless NW25 Wing Clamp and Centering Ring
Wetted materials: 304L Stainless steel, glass, Type P thermocouple
Extended Battery Lifespan
Portable | Solid state electronics built into a handheld gauge that operates using AA batteries that lasts up to 70 hours
In-lab use | Power gauge using the integrated Micro-USB port for long-term use without the need to change batteries
Ideal Vacuum Gauge for Processing Applications
Laboratory, freeze drying, low pressure distillations, foreline monitoring, Schlenk lines performance, and transformer dry-out
Or any application with higher levels of condensables where sensor failure is more likely
Watch this video of Tim Collins (DigiVac’s CEO) using the Bullseye Precision Gauge to instrument our vacuum pump down solution to verify function and safety. And this video overviews Bullseye’s use in understanding vacuum system function and performance.
Technical Specifications
| Units | Torr, mbar, kPa, millitorr, microns, bar, inches of Hg, mm Hg, inches of water, PSI, Pa |
| Measurement Range | 1E-4 – 1000 Torr |
| Range with Accuracy | 0.001 – 5 Torr |
| Sensor Type | Agilent 536-KF25 |
| Dimensions | 11 x 10 x 4 in |
| Certifications | CE, RoHS |
DIGIVAC
Agilent 536 Vacuum Sensor KF25 or KF16 Flange
The Agilent 536 KF16 and 25 Vacuum Sensors are Thermocouple Gauge Tubes. The sensors are a welded 304 stainless steel version of the 531 with KF flange and an additional baffle that greatly extends the sensor life.
Agilent 536 Vacuum Sensor KF25
NW16/KF16 OR NW25/KF25 Flange, 304L Stainless Steel with the Addition of a Baffle
Total Range: 1 millitorr to 760 Torr
Range with Accuracy: .001 Torr to 6 Torr
Maximum bake-out temperature: 150 °C
The Agilent 536 Vacuum Sensor by Agilent is welded 304 stainless steel with an additional baffle that greatly extends the tube life when exposed to condensable gases in demanding applications like distillations, vacuum processing, and laboratory research using schlenk lines
Provides a continuous and repeatable indication of pressures
The thermocouple and heater are noble metal to minimize any possible affect of contaminants on sensor performance
Certifications: CE Certified and RoHS compliant
Maximum bake-out temperature: 150 °C
536 KF25 Part Number: L6141309
536 KF16 Part Number: L6141308
Compatible Gauges:
Bullseye Precision Gauges
StrataVac Multi-Gauge Controller
DigiVac Vacuum Gauges and Vacuum Controllers
Replacement tube for DigiVac Bullseye Precision Gauge for Processing
Applications:
Rough Vacuum
Process Vacuum
Research and Development
Industrial Vacuum Applications
Troubleshooting
DigiVac Webinar
Troubleshooting Vacuum Instruments + Q&A
Bullseye's Use in Understanding Vacuum System
This video is from DigiVac's "Automated Pump Down Control Case Study", and features the Bullseye Precision Gauge and Bullseye DASH.
Instrumenting our Pump Down Solution to Verify Function & Safety
This video is from DigiVac's "Automated Pump Control Case Study". In this clip, Tim Collins overviews the instrumentation that we added to our pump down solution in order to verify that it was functional and safe.





