FREE FIELD BLAST PRESSURE PENCIL PROBE (0-250 PSI)

FREE FIELD BLAST PRESSURE PENCIL PROBE (0-250 PSI)

SKU : 1-09-03

“Pencil” Probes were originally developed at Aberdeen Proving Ground for measuring blast effects on structures and humans. This Pencil Probe incorporates an acceleration-compensated quartz element and integral microelectronics for long cable driving, improved stability and low thermal sensitivity. Compatible with MREL’s DataTrap II™ Data/VOD Recorder (Product 1-04-01) and MicroTrap™ VOD/Data Recorder (Product 1-03-01) containing the optional MicroTrap™ Scope Upgrade (Product 1-03-03). Requires excitation power from Product 1-11-03A. MREL recommends Products 1-13-01 and 1-13-02 to hold the Pencil Probe in place. The sale of this item is controlled by federal authorities – export approval must be obtained by MREL for all Customers.

DÉTAILS SUPPLÉMENTAIRES

CARACTÉRISTIQUES TECHNIQUES

	English:	SI:
Performance
Measurement Range (for ±5V output)	250 psi	1724 kPa
Useful Overrange (for ± 10V output) [3]	500 psi	3447 kpsi
Sensitivity (±15 %)	20 mV/psi	2.90 mV/kPa
Maximum Pressure	5 kpsi	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	≤200 Ohm	≤200 Ohm
Output Bias Voltage	8 to 14 VDC	8 to 14 VDC
Physical
Sensing Geometry	Compression	Compression
Sensing Element	Quartz	Quartz
Housing Material	Aluminum	Aluminum
Diaphragm	Invar	Invar
Sealing	Epoxy	Epoxy
Electrical Connector	BNC Jack	BNC Jack
Weight [2]	12.4 oz	352 gm

* All specifications are at room temperature unless otherwise specified.

[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.