ICP® FREE-FIELD TOA PRESSURE SENSOR Model 137B26

Quartz, free-field, ICP® blast pressure pencil probe, 250 psi, 20 mV/psi, 4-pin connector, with two outputs for T.O.A. This is a 2-sensor pencil probe that provides time of arrival from which shock speed may be calculated and the pressure time wave form for total impulse measurement, all in one sensor.

Measurement Range: 250 psi (1724 kPa)
Sensitivity: (±15%) 20 mV/psi (2.9 mV/kPa)
Resonant Frequency: >=400 kHz
Electrical Connector: 4-pin
Weight: 16.1 oz (456 gm)

	ENG	SI
Performance
Measurement Range (for ±5V output)	250 psi	1724 kPa
Useful Overrange (for ± 10V output) [3]	500 psi	3447 kPa
Sensitivity (±15 %) [4]	20 mV/psi	2.9 mV/kPa
Maximum Pressure	5000 psi	34474 kPa
Resolution [2]	0.7 mpsi	0.005 kPa
Resonant Frequency	≥400 kHz	≥400 kHz
Rise Time (Incident)	≤6.5 µ sec	≤6.5 µ sec
Non-Linearity [1]	≤1.0 % FS	≤1.0 % FS
Environmental
Temperature Range (Operating)	-100 to +275 °F	-73 to +135 °C
Temperature Coefficient of Sensitivity	≤0.05 %/°F	≤0.090 %/°C
Electrical
Discharge Time Constant (at room temp)	≥0.2 sec	≥0.2 sec
Excitation Voltage	20 to 30 VDC	20 to 30 VDC
Constant Current Excitation	2 to 20 mA	2 to 20 mA
Output Impedance	≤100 Ohm	≤100 Ohm
Output Bias Voltage	8 to 14 VDC	8 to 14 VDC
Physical
Sensing Element	Quartz	Quartz
Housing Material	Aluminum	Aluminum
Diaphragm	Invar	Invar
Sealing	Epoxy	Epoxy
Electrical Connector	4-Pin Jack	4-Pin Jack
Weight [2]	16.1 oz	456 gm

* All specifications are at room temperature unless otherwise specified.

Specification Notes

[1] Zero-based, least-squares, straight line method.

[2] Typical.

[3] For +10 volt output, minimum 26 VDC supply voltage required. Negative 10 volt output may be limited by output bias.

[4] Two identically spec'd elements spaced 10cm apart - see drawing #65310 for details. Individual calibration certs supplied for each channel.

[5] See PCB Declaration of Conformance PS023 for details.

Accessories

Supplied
PCS-6AC		0