T4 - Portable multigas detector
T4 presents innovative safety features as well as a robust and intuitive design, providing advanced protection to those operating in hostile environments. This portable multigas detector, extremely easy to use and repair, protects against the four most common gas hazards: carbon monoxide (CO), hydrogen sulphide (H2S), flammable gases and oxygen depletion (O2).
T4 contains a wide range of powerful features to make everyday use easier and safer.
TWA ResumeUnique to T4, the TWA Resume function ensures toxic gas exposure is calculated accurately over an entire shift, even if T4 is switched off for a break or during travel to another site. When most portable detectors are turned off, the algorithm that assesses TWA exposure assumes that it’s the end of the shift. When turned on again, these detectors act as if it is a new work shift, ignoring all previous measurements. The TWA Resume function however, provides the option to include previous measurements from within the correct time frame.
18 hour batteryWith a battery life of 18 hours, T4 allows multiple or longer shifts to be worked between recharging.
Backlit displayLarge transparent display with backlight and the ability to rotate the screen 180 ° to facilitate reading while wearing the device.
Positive SafetyCrowcon's visual 'traffic light' indication, provides constant visual assurance that T4 is operating soundly and conforms to site bump test & calibration policy. The bright green and red Positive Safety LEDs are visible to all and offer a quick, simple and comprehensive indication of monitor status to both the user and others around them.
SafetyApproved for Zone 1 ATEX and Class 1 UL Div 1 for operation in various environments.
Dedicated sensorsA sensor for each gas provides effective, fast and reliable detection.
Robust designCrowcon's toughest portable yet, T4 is durable by design and includes an integrated rubber boot as standard. An optional clip-on filter cover, which is easily removed and replaced, ensures sensors are protected in the dirtiest environments. Drop tested to 4m and well protected from water ingress through IP65 and IP67 certification, T4 allows uninterrupted working in the most demanding environments.
Multiple alarms95 dB acoustic alarm, bright red / blue LEDs and vibration alarms provide an effective warning against the risks created by gases.
Ease of useOffering you compliance, robustness and low cost of ownership in a simple to use solution. The large single button and intuitive menu system allows T4 to be operated wearing gloves with minimal training.
Product variants and options
2 gas - Flammable
2 gas - CO
3 gas - H2S
3 gas - CO
3 gas - CO (H2 immune)
4 gas - CO (H2 immune)
|Hydrogen sulfide (H2S)||X||X||X|
|Carbon monoxide (CO)||X||X||X|
|Carbon monoxide (H2 immune)||X||X|
Gases and ranges
|Ossigeno (O2)||0-30% vol.||0,1% vol.|
|Infiammabile||0-100% LEL||1% LEL|
|Acido solfidrico (H2S)||0-100 ppm||1 ppm|
|Monossido di carbonio (CO)||0-1000 ppm||1 ppm|
- Integrated alligator clip
- Tethering loop
- Bump/calibration plate
Contact us for information about other possible combinations of gas sensors!
- Battery life
- 18 hour typical runtime, 5.5 hour recharge
- Data logging
- 130 hours of data at 10s intervals, max 3,500
- From –20°C to 55°C (from -4°F to 131°F)
- H:135 mm L:80 mm P:35 mm
- 282 g
- ATEX, IECEx, UL, INMETRO, MED
- 95dB, vibration integrated, bright red & blue LED’s
- Classificazione IP
- IP65 e IP67
- 10-95% RH @ 40°C non-condensing
To register on the site and create your account:
1. Click on the register button in the main menu
2. Enter the required and possibly optional data
3. Enter a password that contains at least one uppercase character, one lowercase character and one digit, and is at least 8 characters long
4. Accept the privacy terms
5. Click the save button
If everything was successful, you will have created your account.
On the other hand, if registration is not successful from your device, please contact us!
We will be happy to help you Contact us >
Shipping is paid for by us and free of charge for orders over €200 by contracted express courier for shipments throughout Italy and Europe. For shipments to non-EU countries, the service will be charged on the invoice and must be agreed upon in advance with our sales department. Find out more >
We use an express courier company for shipments throughout Italy and EU countries with the following delivery times, which vary depending on the product. Within each product sheet, you will be able to see the delivery time (days or weeks). On dispatch, the tracking of the order will be shared, in order to follow the tracking of the product until the moment of delivery.
A customised catalogue for each product can be downloaded from the shop.
For any other documentation, instruction manuals or product and company catalogues not available through the site, please contact us. We will be happy to send you the material you are looking for.
The Comastri Distribution technical team is on hand to provide support
In the event of faulty or defective goods, you can take the following steps:
2. Send the form by email to firstname.lastname@example.org
Comastri Distribution staff will take over your case, assess your specific situation and get back to you as soon as possible.
Once you have received authorisation for sending from the personnel in charge, you can send the equipment. All shipping information will be forwarded by Comastri Distribution personnel.
If the material is found to be under warranty, Comastri Distribution will take care of the necessary technical assistance.
If the material is not under warranty, a quotation for service will be sent.
We do not accept returns and/or claims unless agreed in advance with our sales department. You will have to send us an email to email@example.com within 8 days of receipt of the goods, after which they will be considered accepted.
Operational leasing provides the benefit of deferred payment over time, allowing the client to adapt the equipment according to its needs. It also guarantees shortened depreciation of assets, no risk of becoming obsolete at its own expense and, of course, more precise business cost planning.
To request a quote for operational leasing, simply fill in our forum, and you will be emailed immediately
The shop accepts the following payment methods: bank transfer, credit card, Paypal.
In the event of a bank transfer, the order will be processed as soon as the payment is received by the bank. The time taken to receive the transfer may vary from 1 to 3 days.
Using a credit card or Paypal will result in immediate confirmation of the order.
The shop accepts the most popular credit card types: Visa, Mastercard, American Express and Discover. Go to the dedicated section for more information on payment methods
First, register with your company data; you can then send us the same order on your company letterhead, which includes your order number.
If you wish, you can contact us to agree on a different payment for orders over €1000.
On receipt of your order in the e-shop, you will be notified of the order confirmation by email, then the payment arrangements will be processed in the client account.