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P421 Submersible Pressure Transmitter
Brand: Tel-Tru Manufacturing Co.Tel-Tru's P421 submersible pressure transmitter is designed for the OEM and end-users where continuous submersion in sludge/slurry applications is required.
The P421's key feature is its clog free design of the sensing diaphragm, which improves reliability and lowers maintenance. The P421 is manufactured to perform over time in harsh well environments.
An internal network of MOV’s and dual gas discharge tubes protect against lightning, while dual sealing techniques ensure the integrity of the waterproof seal.
The P421 all welded sensing diaphragm is “backed-up” with a solid piece of stainless steel and can withstand the most abrasive / cyclical applications.
Specifications
Accuracy
- Static Accuracy: ± 0.25 % of Full Scale Output
- Static Accuracy: ± 0.5 % of Full Scale Output (BFSL, RSS) Combined Effects of Non-Linearity, Hysteresis & Repeatability,
Applications
- Heavy Slurries
- Hydro Electric
- Level & Depth Measurement
- Wastewater Treatment
Approvals & Certifications
- CE EN 50081-2, EN 50082-2
Burst Pressure
- 5 times Full Scale
Cable Material
- Polyurethane
- Tefzel
Communication
- HART
Compensated Temperature
- -17.8° to 76.7° C (0° to 170° F)
Electrical Connectors
- Submersible 1/2” NPT Male Conduit Connection with 10 to 50 feet Vented Polyurethane & Tefzel Cable
Electrical Protection
- Lightning Protection: MOV & Dual Gas Discharge Tube
- Short Circuit Protected: up to 40 Vdc
Enclosure, Body Material
- 316L Stainless Steel
Excitation Voltage
- 8-38 Vdc
Insulation Resistance
- 1,000 megaohms at 50 Vdc
Mounting
- Pressure Port: Flush Mounted
NACE & NIST
- NIST Traceable Calibration Certificate
Operating Temperature
- -40° to 93° C (-40° to 200° F)
Output
- 0.5 - 4.5 Vdc - P421J
- 0-5 Vdc, 3-Wire - P421B
- 4-20 mA, 2-Wire - P421A
Power Supply Effect
- ± 0.002 % of Full Scale Output Per V Input
Pressure Range
- bar: 0 to 51.7
- Feet WC: 0 to 500
- kPa: 0 to 5,171
- psi: 0 to 750
Pressure Type
- Gauge
Proof Pressure
- 2 x Full Scale
Repeatability
- ± 0.1 % of Full Scale Output
Resolution
- Infinite (± 0.001 % of Full Scale Output Usable)
Response Time
- < 5 milliseconds
Reverse Polarity Protection
- Yes
RFI/EMI Protection
- Internal Filtering
Stability
- Long Term Stability: ± 0.25 % of Full Scale Output Per Year
Storage Temperature
- -40° to 121° C (-40° to 250° F)
Temperature Effect
- ± 1.5 % of Full Scale Output over Compensated Range [Combined Effects of Zero & Full Scale Output with Reference at 21° C (70° F)]
Update Time
- Warm-Up: < 10 milliseconds
Zero Balance
- ± 1 % of Full Scale Output
