Vacuum Gauges And Transducers

T198X32

Brooks Granville-Phillips / 275806-EU Series 275 Mini-Convectron Vacuum Gauge Module

About this part

T198X32 is an archived unit identifier associated with the Brooks-era Granville-Phillips catalog number 275806-EU. That configuration is a Series 275 Mini-Convectron vacuum gauge module with nonlinear analog output, one setpoint relay, no digital display, and an NW16KF flange. It measures air or nitrogen from 1 × 10^-4 to 1000 Torr and is factory calibrated for nitrogen; measurements of other gases require appropriate conversion data

Configurations vary. Verify the exact unit before choosing a replacement.

Specifications Documents (3)Photos (5)Listing history

Granville-Phillips Series 275 Mini-Convectron T198X32 Convection-enhanced Pirani vacuum gauge module auction image

Archived part photo · View gallery

Key Facts

ManufacturerGranville-Phillips Series 275 Mini-Convectron

Part numberT198X32

Product familyConfiguration-specific

Device typeGauge

Configuration statusConfiguration varies

Application classVacuum and cryogenic systems

CategoryVacuum Gauges And Transducers

Specifications

Identification

Archive identifier	T198X32
Observed manufacturer catalog number	275806-EU

Configuration

Interface	Nonlinear analog output; no digital communications
Display	None
Setpoint relays	One
Vacuum connection	NW16KF flange

Pressure measurement

Range for air or nitrogen	1 × 10^-4 to 1000 Torr; 1 × 10^-4 to 1333 mbar; 1 × 10^-2 to 1.33 × 10^5 Pa
Calibration gas	Factory calibrated for nitrogen; air is measured within the instrument accuracy specification
Gas dependence	Indicated pressure varies with gas species and mixtures; conversion data or a gas-independent transfer standard is required for other gases

Analog output

Signal

0.375 to 5.659 V DC for 0 to 1000 Torr of nitrogen, nonlinear

Electrical

Power requirement	11.5 to 26.5 V DC; 0.1 A at 11.5 V DC; 1.6 W maximum
I/O connector	9-pin male subminiature-D

Relay

Contact arrangement	Single-pole, double-throw (SPDT), with common, normally open, and normally closed terminals
Contact rating	1 A at 30 V DC resistive or 30 V AC non-inductive
Setpoint range	1 × 10^-3 to 1000 Torr; 1 × 10^-3 to 1333 mbar; 1 × 10^-1 to 1.33 × 10^5 Pa
Hysteresis	2% of reading for the configuration without a display

Environment

Operating temperature	0 to 40 °C ambient, non-condensing
Non-operating temperature	-40 to 70 °C

Installation

Mounting orientation

Horizontal gauge axis; orientation is especially important above 1 Torr

Construction

Filament options	Gold-plated tungsten is standard and solid platinum is optional; the installed filament is not established by catalog number 275806-EU alone
Internal volume	35 cm³ (2.14 in³), as specified by the legacy 275512 manual
Materials exposed to vacuum	304 stainless steel, gold, borosilicate glass, Kovar, alumina, NiFe alloy, and polyimide
Case	Powder-coated extruded aluminum
Maximum gauge bakeout temperature	150 °C, non-operating, with electronics removed

Compliance

Legacy configuration

CE-marked

What Does T198X32 Mean?

T198X32 is not defined in the Granville-Phillips ordering tables. The associated 275806-EU catalog number supplies the documented product configuration.

Segment	Field	Interpretation
T198X32	Identifier type	Archived unit identifier; not a published Granville-Phillips ordering code and therefore not technically decodable.
275806-EU	Observed catalog number	Legacy Series 275 Mini-Convectron module with nonlinear analog output, one setpoint relay, no display, and an NW16KF flange.
EU	Catalog suffix	Included in the legacy CE-marked catalog number; the manual does not publish a separate character-by-character definition for this suffix.

Legacy and Current Configuration Comparison

MKS currently catalogs 275400-1-GD-T with the same principal function set as legacy 275806-EU. A direct drop-in replacement relationship is not established by the manufacturer material cited here.

Field	Legacy 275806-EU	Current 275400-1-GD-T
Interface	Nonlinear analog	Nonlinear analog
Display	None	None
Setpoint relays	One	One
Vacuum fitting	NW16KF	NW16 ISO-KF
Filament	Standard tungsten or optional platinum; installed option unresolved	Gold-plated tungsten
Internal volume	35 cm³	40 cm³
Direct replacement status	Not established in cited manufacturer material	Obtain MKS confirmation before substitution

Gas and Installation Warnings

Do not use the module to measure flammable or explosive gases.
Pressure indication is gas-dependent. Apply manufacturer conversion data for gases other than nitrogen or air, and establish a calibration curve with a gas-independent transfer standard when suitable data are unavailable.
Configure the relay setpoint for the actual process gas before connecting it to system-control equipment.
Maintain the gauge axis horizontally for correct readings above 1 Torr.
Provide pressure-relief protection where system pressure can exceed the instrument limit.

Documentation Downloads

Local PDF copies

Granville-Phillips Series 275 Mini-Convectron Vacuum Gauge Module with Nonlinear Analog Outputs and Process Control Relays — Instruction Manual 275512, Revision 03, June 2008 Local PDF download

PDF3.1 MB

Series 275 Mini-Convectron Vacuum Gauge Module with Nonlinear Analog Outputs and Process Control Relays — Instruction Manual 275513, Revision D, July 2022 Local PDF download

PDF2.7 MB

Series 275 Analog, RS485 and DeviceNet Modules Datasheet Local PDF download

PDF605 KB

Part Photos

5 images

Historical archive images for identification, labels, connectors, and condition reference, not current inventory.

Historical Listings & Prices

Historical listing data, not a current offer

Archive records1Tracked historical listing records

Historical median price$100.00Based on archived listing records

Recorded price range$100.00 - $100.00Low to high recorded listing price

Local documents3PDF copies available from Sonisys

Recorded price context

The typical recorded price range is $100.00 to $100.00. Based on 1 archived listing record; not a current offer, appraisal, or confirmed sale price.

View archived listing titles

T198X32 Brooks Granville-Phillips 275 Mini-Convectron 275806-EU

Archived listings

Other Part Numbers & Aliases

T198X32275806-EU