Fluke RPM4 manual General Specifications, Pressure Measurement Specifications

RPM4™ OPERATION AND MAINTENANCE MANUAL

1.2 SPECIFICATIONS

1.2.1 GENERAL SPECIFICATIONS

Power Requirements 85 to 264 VAC, 50/60 Hz, 25 VA max consumption and 12VDC, 1.2 A

Operating Temperature Range	15 to 35 °C
Storage Temperature Range	- 20 to 70 °C
Vibration	Meets MIL-T-28800D
Ventilation	To prevent product overheating, provide		proper ventilation. Allow 10 cm
	(4 in.) clearance from rear panel cooling fan.
Weight	5 kg (11 lb) approx. (varies slightly with number and type of Q-RPT modules)
Dimensions	10 cm H x 22.7 cm W x 24 cm D (3.9 in. x 9.3 in. x 9.5 in.)
Microprocessors	Motorola 68302, 16 MHz
Communication Ports	RS232 (COM1, COM2), IEEE-488.2
Fuses	1 A, 250 VAC fuse, 5 x 20 mm, time lag type fuse
	Internal power supply fuse not replaceable by operator: 2.5A, 250 VAC
Pressure Ranges	One or two independent quartz reference pressure transducer (Q-RPT)
	modules cover vacuum to 280 MPa (40 000 psi)
Operating Medium	Any clean, dry, non-corrosive gas or liquid. Q-RPTs less than 7 MPa full scale,
	gas only
Pressure Connections		Q-RPTs up to A70M	Q-RPTs > A70M
	TEST(+):	1/8 in. NPT F	DH500 F
	TEST(-):	1/8 in. NPT F	None
	VENT or ATM:	10-32 UNF (VENT)	10-32 UNF (ATM)

Self Defense System (SDS™)

Pressure Limits

CE Mark

DH500 is a gland and collar type fitting for 6mm (1/4 in.) coned and left hand threaded tubes equivalent to AE F250C, HIP HF4, etc.

Included on all gas operated Q-RPT modules of A7M or lower. Isolates Q-RPT module TEST(+) port and vents it to atmosphere. SDS is not included with liquid filled Q-RPTs.

Maximum Working Pressure: 104 % Q-RPT maximum Maximum Pressure Without Damage: 125 % Q-RPT maximum

Maximum SDS Protection Pressure: 10 MPa (1 500 psi) Without Damage: 13 MPa (2 000 psi)

Available, must be specified

1.2.2 PRESSURE MEASUREMENT SPECIFICATIONS

1.2.2.1QUARTZ REFERENCE PRESSURE TRANSDUCER (Q-RPT)

RPM4 can be configured with one or two quartz reference pressure transducer (Q-RPT) modules to measure pressure. The type (Axxx, Gxxx, BGxxx, BAxxx) and range of the Q-RPT module(s) determines the RPM4 measurement specifications.

All Q-RPTs whose maximum pressure is over 200 kPa (30 psi) are of the absolute pressure type (Axxx) using an evacuated, permanently sealed reference. Axxx Q-RPTs can measure absolute, gauge and negative gauge pressure. Gauge pressure with an Axxx Q-RPT is defined by offsetting atmospheric pressure and applying dynamic compensation for atmospheric changes using the on-board barometer (see Section 3.2.2). Gxxx (gauge) Q-RPTs can measure positive gauge pressure only. BGxxx (bi-directional gauge) Q-RPTs can measure gauge and negative gauge pressure. See Section 3.3.3 for additional information on absolute, gauge and negative gauge measurement modes.

RPM4s configured with two Q-RPT modules have independent TEST ports and can measure separately. Two Q-RPTs can also be used together to operate in differential mode (see Section 3.3.3.1) and parallel mode (see Section 3.2.4).

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