The TP9-A is a Zone 0 intrinsically safe digital gauging thermometer re-designed to the latest standards for use in hazardous locations.
With over 30 years experience manufacturing digital thermometers, ThermoProbe has designed the TP9-A with reliable, high accuracy RTD
sensors based on our previous industry-standard thermometers such as the TP7-C and TP9.
The latest TP9-A electronics are more accurate than previous models based on our laboratory thermometer technology. The convenient user
interface provides a large 1/2” alpha numeric character display and buttons that can be easily used with gloves. An automatic backlight
feature is included to help reading the display in low light conditions. An intuitive menu allows the user to easily select Celsius or
Fahrenheit units, display resolution, and access calibration. Icons on the display help the user identify temperature stability, battery
condition and menu items. The TP9-A comes equipped with easily replaceable AA batteries, providing up to 200 hours of operation.
The TP9-A rugged instrument body is constructed from stainless steel and static-dissipative plastic components. The TP9-A ergonomic probe
storage and stainless construction is well suited for gauging heavy products that are hard to clean such as asphalt. With multiple probe
configurations and allowable lengths up to 50 meters (165 ft), the TP9 is well suited to many tank gauging applications. The probe
assembly is constructed of easy to clean materials such as non-stick cable and stainless steel.
TP9-A Configuration Options
Thermoprobe gauging thermometers come equipped with probe assemblies consisting of a length of non-stick 2-wire cable and a stainless
steel weighted RTD temperature sensor. Indelible brass markings are applied to the cable to aid in tank depth determination. The Probe
Assembly part numbers are specified as follows:
Example: Our most standard PG-075-SW-SM probe assembly is 75 feet long (075) with a Standard Weight (SW) and
brass markings every 5 feet (SM). Various configurations are available.
0.25 lb (0.11 kg)
This reliable design is our most popular probe.
0.50 lb (0.23 kg)
This design has the same diameter as the Standard Weight but is slightly longer and heavier.
Railcar Weight / No Weight
The Railcar probe is produced as a specialty probe for the railcar industry specifically for small diameter gauging tubes fitted
in many tanker cars.
0.75 lb (0.34 kg)
The probe of choice when working with liquid asphalt, molten sulfur, molasses, or similar high-viscosity
The TP9-A is recognized with international (IECEx), European (ATEX), and EurAsian (TR TS) safety certificates.
Recommended Operation per API 7.2, International Safety Guide for Oil Tankers and Terminals, API 4 and other recommended procedures and