Omega Engineering manual Accuracy, Pneumatic Operation Not GP901-05 version

Network type	Orbit - RS485 2-wire multi-drop (up to 31 per channel)
Network speed	1.5Mbaud, 187.5k Baud or 9600 Baud (do not use 9600
	Baud for New Applications as this will be phased out)
Network Control Character	Break Character - low (space) of >90 us (187.5k Baud) or
	>1.2mS (9600 Baud)
Command Character Format	1 start, 8 data, 1 odd parity, 1 stop bit

Accuracy

The error quoted assumes periodic re-setting against a setting master in accordance with normal gauging practice (not less than once per day). As the Digital Probe may be used anywhere on its stroke the setting master itself must be of known dimensions, but does not need to be precisely on its nominal value. The error quoted for the Digital Probe therefore includes a factor dependant on the distance between the setting master and the component being gauged.

Where D = difference in mm between setting master and component.

Error at calibration temperature: -		0.05 mm 6 0.2% x D
0.5 mm Probes i.e. GP901-05-S	6
1 mm Probes i.e. GP901-1-S	6	0.1 mm 6	0.1% x D
2 mm Probes i.e. GP901-2-S, GP901-2-P	6	0.1 mm 6	0.1% x D
5 mm Probes i.e. GP901-5-S, GP901-5-P	6	0.1 mm 6	0.2% x D
10 mm Probes i.e. GP901-10-S, GP901-10-P	6	0.1 mm 6	0.2% x D
20 mm Probes i.e. GP901-20-S, GP901-20-P	6	0.1 mm 6	0.2% x D
Gauge Head Specifications
Specifications Common to All Gauge Head Types
Body Material	Stainless Steel 400 Series
Probe tips	various types available
Non-repeat	<0.15 mm
Max. Angular Rotation of Tip	2°
Gaiter Material	Viton®
Max. Probe tip tightening Torque	0.22 Nm – M2.5 Thread
(when changing tip please take care not to damage probe) 0.12 Nm – M2 Thread
Storage Temperature Range	-20°C to +100°C
Operating Temperature	+5°C to +80°C
Environmental Protection (see mounting notes)	IP 65 (with gaiter)
Cable Standard (not all types)	2m screened, PUR, insulation
Option (not all types)	Standard cable with stainless steel or plastic braid

Pneumatic Operation (Not GP901-05 version)

Minimum operating pressure	With Gaiter	0.4
(bar)	Without Gaiter	0.3
Maximum operating pressure	With Gaiter	1.0
(bar)	Without Gaiter	2.0
Air leak rate ml/min. at 1.0 bar	With Gaiter	<10
	Without Gaiter	<150

 GP901 M-3343 05/08