R750D 10-3000 PSIG Baratron® Absolute Capacitance Manometers with Trip Relays

The R750D High-Pressure Baratron® Absolute Capacitance Transducer is a rugged, industrial-grade pressure and vacuum transducer with superior accuracy, repeatability, and long-term signal stability. It offers both a standard 0-10 VDC analog output signal and two (2) independently-adjusted electromechanical trip relays that can be used to switch external components such as pumps, valves, and other equipment.

10 Torr (13 mbar) to 3000 PSI (204 bar) ranges with ±1% of reading accuracy
0 to 10 VDC analog output proportional to absolute pressure
Two independently-adjusted trip point relays
All-welded Inconel® sensor construction allows for use with most corrosive media
Self-contained sensor and signal conditioner in a compact and rugged enclosure

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	Compare	Description	Compatibility	Drawings, CAD & Specs	Full Scale Range	Fitting Type	Electrical Connector	Avail.	Price
		750D51PCD2GAAbsolute Pressure Transducer, 50 psia, 4 VCR Female, 0-10 VDC, DB9	UNIVERSAL		50 psia	4 VCR female	9-pin D-sub male		$1,157

Configuration Options

The following options are available for R750D Baratron® Absolute Pressure Transducers
Ordering Code Example: R750D13TCE2GG

Configuration Option	Option Code
R750D Absolute Capacitance Manometer	R750D
Range Full Scale
10 Torr	11T
20 Torr	21T
50 Torr	51T
100 Torr	12T
500 Torr	52T
1000 Torr	13T
50 psia	51P
100 psia	12P
3000 psia	33P
Fittings
0.5 in. OD tube	BA
0.25 in. OD weld stub	BB
4 VCR male	CB
4 VCR female	CD
8 VCR female	CE
8 VCO female	DA
0.25 in. NPT female	FA
0.25 in.NPT male	FB
0.125 in. NPT female	FE
0.125 in. NPT male	FF
NW16 ISO-KF	GA
1.33 in. OD CF	HA
Analog Output
0-10 VDC	2
Accuracy
1.0% of Reading	G
Trip Point Setting
Relays activate above trip points	G
Relays activate below trip points	S

	Description
	R750D Absolute Capacitance Manometer, High-Pressure, Trip Relays, 10-3000 PSIG

Specifications

Type
Pressure Transducer
Measurement Type
Absolute
Full Scale Pressure Ranges
10 Torr (13 mbar) to 3000 PSI (204 bar)
Accuracy
±1% of Reading
Resolution
±0.01% of Full Scale
Repeatability
±0.1% of Reading
Analog Output
0-10 VDC into >10 k Ω load
Electrical Connector
15-pin D-sub
Zero Temperature Coefficient
0.02% of Full Scale/°C

Span Temperature Coefficient
0.04% of Reading/°C
Volume
4.7 cc
Overpressure Limit
45 PSI or 2x Full Scale (whichever is greater)
Burst Pressure
Full Scale ranges of 1000 PSI or less: 100 PSI or 10x FS (whichever is greater)
Full Scale ranges of more than 1000 PSI: 5x Full Scale
Power Requirements
±15VDC (± 5%) @ 35 mA (max)
Response Time
20 msec
Relay Specifications
2 independently-adjusted DPDT contacts adjustable between 0.5% and 100% of FS. UL listed and rated at 1.0 amps @ 30 VDC or 0.3 amps @ 30 VAC.
Weight
1.0 lbs (0.4 kg)
Compliance
Compliant with EMC Directive 2004/108/EC
Compliant with Directive 2002-95-EC

Features

Baratron® Capacitance Manometer Technology

Capacitance manometers are electro-mechanical gauges that can measure both pressure and vacuum. The capacitance gauge translates a pressure-modulated movement in a thin diaphragm into an electrical signal proportional to the pressure. The pressure sensor is the thin diaphragm that is exposed to the pressure or vacuum being measured via the inlet tube. An electrode is mounted in the reference cavity behind the diaphragm. Pressure differences between the process and the reference cavity deflect the diaphragm slightly, changing the distance between it and the electrode. Variations in this distance produce variations in the capacitance between the diaphragm and the electrode creating an electrical signal that is proportional to the pressure change. Since differences in the capacitance signal are produced by physical changes within the manometer and not by changes in the gas properties, pressure measurements by the capacitance manometer are independent of the composition of the gas being measured.

Gas independent pressure measurement with a Baratron® capacitance manometer. Schematic shows the internal components and functional zones.

Percent of Reading Accuracy

Accuracy is specified as a percent of Reading, not Full Scale, as seen in some of the lower performance devices. Percent of Reading accuracy provides you with an even more accurate output signal in the lower scale of the pressure range, where it is needed most.

Absolute Pressure Measurement

These Baratron® pressure transducers are referenced to vacuum for absolute pressure measurement. Applications include: vacuum furnaces, freeze-drying of fruits and vegetables, gas lasers, automotive component testing, bottle coatings, and vacuum distillation.

Inconel® and Incoloy® Construction Wetted Surfaces

These pressure transducers feature Inconel® and Incoloy® nickel alloy construction of the pressure sensor allowing it to operate without damage in virtually any chemical environment, including halogens, deionized water and steam, and ozone. The sensor is fully welded with no intermediate brazing or joining materials.

0 to 10 VDC Proportional Analog Output

These Baratron® capacitance manometers feature a high-level 0-10 VDC analog output signal that is linear with pressure. This analog output can be interfaced with an MKS pressure controller, an MKS power supply/display instrument, or any instrument that meets these requirements.

Two Adjustable Process Trip Point Relays

These pressure transducers feature two user adjustable process trip point relays, each with an adjustment range from 0.5% to 100% of Full Scale or voltage equivalent 0.05 to 10 VDC. The relays are UL listed and rated at 1.0 amps @ 30 VDC or 0.3 amps @ 30 VAC. The trip points are factory set at 55% of full scale with relay A energizing below that level and relay B energizing above the trip point.

15-pin Type "D" Pin-Outs

Pin	Description
1	Relay Contact A, N.O.
2	Pressure Output
3	Reserved
4	Reserved
5	Power Return
6	-15 VDC
7	+15 VDC
8	Relay Contact A, N.C.
9	Relay Contact B, N.C.
10	Trip Point A, Setting
11	Trip Point B, Setting
12	Pressure Return
13	Relay contact B, N.O.
14	Relay Contact B, Common
15	Relay contact A, Common

Accessories

Compatible Cables

Description	Compatibility	Price
RCB2000S-2-M2Manometer Cable, PDR2000 Controller to 722, 750, 850 or 852 Manometers, DB9, 20 ft., RoHS	UNIVERSAL	$473
RCB2000S-2-M1Manometer Cable, PDR2000 Controller to 722, 750, 850 or 852 Manometers, DB9, 10 ft., RoHS	UNIVERSAL	$368
RCB2000S-2-M3Manometer Cable, PDR2000 Controller to 722, 750, 850 or 852 Manometers, DB9, 30 ft., RoHS	UNIVERSAL	$609
RCB700S-21-10Manometer Cable, LDM display to 700 and 800 Transducers, HD15, 10 ft., RoHS	UNIVERSAL	$125
RCB700S-29-10Manometer Cable, LDM display to 700 and 800 Transducers, Bendix, 10 ft., RoHS	UNIVERSAL	$431

Power Supplies and Displays

Description	Compatibility	Price
AS11900G-03Pressure Input Module, 15 pin D-Sub Connector, 4 Channel	UNIVERSAL	$1,519
PR4000BF2V2Digital Power Supply, Display, 2 Channel, RS232, ±15VDC, 1.5 Amp	UNIVERSAL	$2,982
PR4000BF2V3Digital Power Supply, Display, 2 Channel, RS232, ±24VDC, 1.0 Amp	UNIVERSAL	$3,033
PR4000BF5V3Digital Power Supply, Display, 2 Channel, RS485, ±24VDC, 1.0 Amp	UNIVERSAL	$2,785
PR4000BF5V2Digital Power Supply, Display, 2 Channel, RS485, ±15VDC, 1.5 Amp	UNIVERSAL	$2,785
PR4000BS2V2Digital Power Supply, Display, 1 Channel, RS232, ±15VDC, 1.5 Amp	UNIVERSAL	$2,706
PR4000BS2V3Digital Power Supply, Display, 1 Channel, RS485, ±24VDC, 1.0 Amp	UNIVERSAL	$2,729
PDR2000AODigital Power Supply, Display, 2 Channels, RS232, ±15 VDC, 0.75 Amp	UNIVERSAL	$999

Resources

R750D 10-3000 PSIG Baratron® Absolute Capacitance Manometers with Trip Relays

Configuration Options

Range Full Scale

Fittings

Analog Output

Accuracy

Trip Point Setting