Skip to the beginning of the images gallery

PRODUCT CODE

QT-44-Variant

The QUESTemp 44 is a trusted tool for professionals requiring reliable heat stress monitoring without the maintenance demands of traditional wet bulb sensors. Its innovative waterless technology, robust design, and flexible power options make it an ideal choice for accurate and efficient heat stress management.

* Required Fields

£3,474.00 £2,895.00

Qty

TSI QUESTemp 44 / 46 / 48N - Heat Stress Monitor

Name: TSI QUESTemp 44 / 46 / 48N - Heat Stress Monitor
SKU: QT-44-Variant

Description / Features / Spec

Downloads

Delivery

Returns

TSI QUESTemp 44 / 46 / 48 – Heat Stress Monitors

The TSI QUESTemp 44, 46, and 48N Heat Stress Monitors provide accurate and reliable heat stress assessment for industrial, military, and outdoor applications. These monitors use innovative waterless wet bulb technology, eliminating the need for daily maintenance while delivering precise WBGT (Wet Bulb Globe Temperature) calculations. Designed for harsh working environments, they are IP54-rated for dust and water ingress protection, ensuring durability and performance in demanding conditions.

These models measure dry bulk, globe, and wet bulk temperatures and calculate indoor (WBGTi) and outdoor (WBGTo) indices. The QUESTemp 46 and 48N also feature additional heat stress indices and enhanced data logging functions, offering a comprehensive workplace heat stress management solution.

Who Should Use the TSI QUESTemp 44 / 46 / 48?

Industrial & Manufacturing – Monitor heat stress in factories, foundries, and production plants.
Military & Emergency Response – Ensure safe working conditions for personnel in extreme temperatures.
Construction & Outdoor Work Sites – Protect workers from heat exhaustion and dehydration risks.
Energy & Utilities Sector – Ensure workplace safety in power plants, refineries, and heavy industry.
Sports & Athletics – Monitor heat exposure in training, competitions, and endurance events.

Feature	44	46	48N
Dry Bulb, Wet Bulb & Globe Temperatures	✓	✓	✓
WBGT (Indoor) Index	✓	✓	✗
WBGT (Outdoor) Index	✓	✓	✓
Heat Index / Humidex	✓	✓	✗
Temperature Display (°C/°F)	✓	✓	✓
Data Logging Intervals (1-60 mins)	✓	✓	✓
Event Logging Mode	✗	✗	✓
Time & Date Stamping	✓	✓	✓
Pre-set Safety Limits (ACGIH TLV, US Navy, etc.)	✗	✓	✓
Tri-Sensor Compatible (Head-Torso-Ankle WBGT)	Optional	Optional	✗

Key Features

Waterless Wet Bulb Sensor: This sensor eliminates the need for daily maintenance and provides accurate Wet Bulb temperature calculations without water.
Comprehensive Heat Stress Assessment: Measures Dry Bulb and Globe Temperatures and calculates WBGTi and WBGTo indices for thorough heat stress evaluation.
Durable Design: IP54-rated for dust and water ingress protection, ensuring reliability in demanding work environments.
Flexible Power Options: It operates on a 9V disposable battery, an optional NiMH rechargeable battery, or mains power for continuous monitoring.
User-Friendly Interface: Features a clear display and intuitive controls for easy operation in the field.

Specifications

Measurement Parameters	Dry Bulb, Wet Bulb, and Globe Temperatures Relative Humidity (RH) WBGT (Indoor & Outdoor) Index Heat Index / HUMIDEX (44 & 46 models only) Temperature Reading: Celsius or Fahrenheit Data Logging Intervals: 1, 2, 5, 10, 15, 30, or 60 minutes
Operating Temperature Range	Sensor Assembly: -5°C to 100°C (23°F to 212°F) Electronics: -5°C to 60°C (23°F to 140°F)
Data Management	Detection Management Software (DMS) Compatible Event Logging Mode (48N model only) Time & Date Stamping for Compliance
Output	RS-232 Serial Printer / Computer Interface Parallel Printer Interface
Power Source Options	9V Disposable Battery – 80 to 140 hours runtime (model dependent) NiMH Rechargeable Battery (Optional) – 160 to 300 hours runtime AC Power Adaptor for Continuous Operation
Mechanical Features	IP54 Water & Dust Ingress Protection Tripod Mount / Remote Sensor Bar for up to 61m (~200ft) Distance Measurement
Physical Dimensions	Size: 23.4 x 18.3 x 7.6 cm (9.2” x 7.2” x 3”) Weight: 1.2 kg (2.6 lbs) with Mounted Sensor Assembly
Compliance & Certifications	CE Marked Complies with BS EN 27243 Standards

Take advantage of our web-exclusive free UK mainland* delivery offer on orders over £100 ex VAT. See all costs for delivery below and visit our main delivery page for more information on timescales as some restrictions may apply.

UK & Ireland Delivery Options

UK Mainland Standard Delivery on orders under £100 ex VAT - £7.95 ex VAT*
UK Mainland Express Delivery - £21.50 ex VAT (timescales vary – please see delivery page)
Highlands Delivery - £25.00 ex VAT
Channel Island Delivery - £40 ex VAT
Northern Ireland & Republic of Ireland - £25 ex VAT
Saturday Delivery Options – Please contact us on 0141 771 7749 for more info

Standard delivery timescales are normally 3-5 working days, depending on stock availability. Express delivery is normally 1-3 working days, depending on stock availability. Although we carry an extensive stock, there may be some items that are unavailable due to quantities or otherwise. In this case we will inform you of the status of your order and whether or not it can be fulfilled within our standard delivery timeframe. *Mainland UK delivery excludes Northern Ireland, other charges apply.

Please visit our main delivery page for more terms and conditions or contact our Sales Team on 0141 771 7749 or [email protected] for more information. Currently, some manufacturers are facing production and delivery issues due to Brexit and custom clearance and this is affecting lead times of even some of our standard stocked items. We're trying our best to prevent these issues from affecting orders but please be aware that there may be some delays. We are aiming to communicate this as best and as early as possible.

International Delivery Options

Delivery costs vary between countries. Please visit our main delivery page for more information.

You also have the option to 'Arrange Your Own Courier', whereby you organise the shipment of your own goods once they have reached our warehouse.

ORDER CANCELLATION AND GOODS RETURN

Should you wish to cancel an order or return unwanted goods please follow the procedures detailed below to help us ensure cancellations/returns are processed as quickly and efficiently as possible.

Simply log on to your customer account, note the order reference number and email the full cancellation details to [email protected] or contact us on 0141 771 7749. Assuming the order has not been despatched we will cancel.

You have the right to cancel the purchase of goods without having to give a reason at any time within the “cooling off period” of fourteen working days, beginning the day after you take delivery of your order.

You must notify us of your cancellation in writing via email to [email protected] or to our contact address. (Details Here)

If you are in possession of the goods you are under the duty to retain them and take reasonable care of them.

You must send the goods back to us in their original condition to our contact address at your own cost (unless we delivered the item to you in error or the item is damaged or defective) as soon as possible once you have cancelled the contract.

Alternatively we will collect the goods from you which will incur a charge no greater than the actual cost of arranging the collection and shipping. In this case you must make the goods available for collection. We will contact you to make further arrangements.

We reserve the right to make a charge not exceeding our direct costs of recovering the goods if you do not return the goods or return them at our expense.

Upon receipt of returned items in satisfactory condition we will arrange a full credit by the same method used to pay for the goods originally. Any credit due will be processed within a maximum of thirty days.

Note: If you wish to return goods for refund or exchange after 14 days, a re-stocking fee of 20% of the full order total will apply.

If upon receipt of goods you find them to be faulty, damaged or if you have been incorrectly supplied an item, you should notify us within 24 hours by contacting 0141 771 7749 or [email protected] and quoting your order number and contact details.

Frontline Safety will arrange uplift of any damaged or wrongly received goods and if on inspection of goods we also find them to be damaged, faulty or incorrectly supplied, we will offer replacement goods or provide a full refund.

We recommend you inspect all goods prior to signing for and accepting delivery. If there is any visible damage to the outer packaging, ensure goods are sign for as damaged. In instances where it isn’t possible to sign for goods as damaged, these should be signed for as unexamined.

Note: If your goods happen to develop a fault out with the standard returns period but within supplied warranty period or if you require any additional assistance, please contact us on 0141 771 7749 or email [email protected]

IMPORTANT INFORMATION

All postage, handling, customs and duty charges for all returned goods are the responsibility of the customer. We recommend using a fully traceable, insured service as goods are your responsibility while in transit.