
P121
Threa ded Pressure Transmitter
Precision Grade--
Compact, Ruggedized, NEMA 4X Package
Designed for performance/cost at single piece quantities
The P121 Pressure Transmitter is designed to provide our
customers with an economical solution to their industrial
pressure measurement needs. Key feature of the all welded sensing
element is its isolation from induced stresses such as mounting
torque, thermal excursions, and vibration and shock. The P121
is configurable (from single piece orders to large volumes) to
meet customers' needs without sacrificing delivery or
large increases in price.
Manufactured for extended life cycle
The P121 is designed to last in high cyclical environments with or
without the presence of waterhammering or spiking.
Advanced manufacturing techniques, extreme environmental
burn-in and thorough residual stress relieving procedures ensure
the P121 maintains its performance over time.
Ruggedized NEMA 4X packaging
Every Tel-Tru P121 is rated to NEMA 4X standards regardless of the output (mVdc, Vdc, or mAdc) or pressure format
(gage, absolute, or vacuum). Pressure ranges are available
from 0-3 psig through 0-15,000 psig.
Certification
Each transmitter is delivered with a NIST traceable calibration certificate.
Gage,
Absolute,
Vacuum,
Formats
CE
Conforms to EN50081-2 and EN50082-2
Standard Features
±=0.25% FSO Static Accuracy
NEMA 4X Packaging
±=0.25% FSO /YR stability
Available Options
±=0.1% FSO Static Accuracy
Alternate Wetted Materials
Zero/Span Controls/ Shunt Cal
Note: specifications are subject to change.
Tel-Tru Manufacturing Co.
408 St. Paul Street
Rochester, New York 14605 USA
Phone: 585-232-1440 • 800-232-5335 • Fax: 585-232-3857
• E-mail: [email protected] • Web: www.teltru.com

P121 Pressure Transmitter
NEMA 4X for harsh environments
0-3 through 0-15,000 psi
Product Specifications
Electrical
Excitation
P121A, P121B 8-38 Vdc*
P121C 2-15 Vdc
Output
P121A 4-20 mA
P121B 0-5 Vdc*
P121C 1-2 mV/V*
Zero Balance =±1% FSO
FSO Setting =±1% FSO
Resolution Infinite (±.001% FSO usable)
Response Time
P121A, P121B < 5 mS
P121C < 1mS
Insulation Resistance 1000 MO @ 50 Vdc
Reverse Polarity Protected
Warm-up < 10 mS
Power Supply Effect =±.002% FSO per V input (P121A,P121B)
EMI/RFI Internal Filtering (P121A,P121B)
Short Circuit Protected Up to 40 Vdc (P121A,P121B)
Performance
Mechanical
Pressure Ranges 0-3 through 0-15,000 psi
(Customer may specify any range/eng. unit FOC)
(Absolute, vacuum, compound available options)
Proof Pressure 2X Full Scale*
Burst Pressure 5X Full Scale*
Materials
Wetted Parts* 316 & 15-5 SST*
Non-wetted Par ts 316 SST plus electrical connector
Pressure Port ¼”-NPT Male*
Electrical Connector NEMA 4X cable exit (24” cable)*
Dimensions per outline below
Weight nominal 10 oz
Environmental
Compensated Temp Range 0 to 170 oF*
Operating Temp Range -40 to 200 oF*
Storage Temp Range -40 to 250 oF
Static Accuracy =±0.25% FSO* (BFSL, RSS)
(combined effects of non-linearity, hysteresis & repeatability)
Repeatability =±0.05% FSO
Temperature Effects =±1.5% FSO over comp range
(combined effects of Zero & FSO with reference at 70 oF)
Long Term Stability =±0.25% FSO per year
Note: specifications are subject to change.
Tel-Tru Manufacturing Co.
408 St. Paul Street
Rochester, New York 14605 USA
Phone: 585-232-1440 • 800-232-5335 • Fax: 585-232-3857
• E-mail: [email protected] • Web: www.teltru.com
*Options Available
Outline