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Model TP-8

Petroleum & Bulk Liquid Gauging Thermometer

The TP-8 has been designed to be simple yet very versatile, with circuit and sensor components that are highly accurate and reliable over an extended temperature range. The instrument is compact, with cable storage, probe housing holders and handles molded into the case. Depending on the service which the user needs, the case will accommodate both our standard probe assembly or Asphalt probe assembly with 3/4 lb./ 0.34 kg housing and heavy duty cable. Models intended for asphalt and molten sulphur applications are designated with the part number suffix "AW". Other items include the coil cord grounding assembly, carry strap and user instruction sheet.

To endure the environment and be intrinsically safe, the TP-8 is manufactured of materials which are both immune to petrochemicals and are non-sparking. The enclosure is made of extruded aluminum with a nominal thickness of 0.1" / 2.5mm. As with all ThermoProbe instruments, the probe assembly is constructed with very flexible teflon cable, and stainless steel sensor components. To ensure longevity of the user interface, all text is engraved, the window is a scratch resistant polycarbonate and the switch is O-Ring sealed.

Maximum Dimentions:
6.6 x 4.4 x 4.2 in.
16.7 x 11.4 x 10.7 cm
Stainless Steel housing with carbon black impregnated Teflon cable jacket. Standard lengths 50'/15m 75'/23m 110'/34m
Marked in 5 foot or meter increments
Standard housing 0.22 lb/ 0.1 kg cable 0.100" /2.6mm diameter.
Asphalt housing 0.75 lb/ 0.34 kg cable 0.120" /3mm diameter, high temp. PFA Teflon.
Railcar housing 0.25?/10mm diameter

Custody Transfers, Inventory, Tank, Pipeline, Barge, Ship, Railcar, Tank Truck,
(Recommended Operation: API 7 2001, Intl. Safety Guide For Oil Tankers and Terminales.)

Total Weight:
3.7 lbs with 75 ft. of cable
1.7 kg with 23 m of cable
Temperature Range:
14 to 370 °F
-10 to 188 °C
Propane Meters, Loading Rack Meters
Computerized Tank Systems
Approved Battery Type:
9 volt Alkaline,
Duracell MN1604
Rayovac A1604
Eveready 522
±0.2 °F 32 to 200 °F
±0.1 °C 0 to 100 °C
Long term drift not to exceed 0.05%/year
Probe Assembly exchangeable to within
±0.2 @ 32 °F, ±0.6 @ 195 °F.
Meets API 7 2001, Table 3 requirements
All petrochemicals, caustic, acid, alkalies, powders, Molasses, syrups, distilled spirits
Battery Life:
Approximately 50 hours
  Probe Types
Case Materials:
6063 - T6 Aluminum.
Limited Warranty: 90 days on Probe Assembly. 1 year on other components.  

Intrinsically Safe Thermometer
Class I, Div. 1, Groups ABCD
EEx ia IIB or EEx ia IIC
TIIS approved for Japan

See Intrinsic Safety for more information

Meets Requirements of European EMC Initiative.



Hartwig instruments
Pottebakkerstraat 15
NL3194AD Rotterdam-Hoogvliet
Tel: +31(0)10-438-5286
Fax: +31(0)10-438-2099
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