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Pressostat 987/988

Product catalog summary

Overview
Trafag is a Swiss-based international supplier specializing in high-quality sensors and monitoring instruments for pressure and temperature measurement. This document provides technical specifications for the Trafag Pressostat models 987 and 988, designed for applications in machine tools and medium voltage switchgear.

Applications and Features

Steel or bronze bellows
Blade connector (IEC) 2.8 x 0.5 mm
Compact design with factory adjustment

Technical Specifications

Measuring Principle: Bellows
Repeatability: ± 1.0% FS typical
Measuring Range: -0.3 to 1.3 bar up to 1 to 10 bar
Media Temperature: -25°C to +80°C
Output Signal: 1 or 2 floating change-over contacts (SPDT)
Ambient Temperature: -25°C to +70°C
Switching Differential: Not adjustable
Approval/Conformity: EN60730-1/EN60730-2-6: typ 2.B.H

Ordering Information

Custom build codes for different configurations
Options for microswitch standard or gold-plated contacts
Various pressure ranges and materials for bellows and pressure connections

Specifications

Accuracy: Repeatability ± 1.0% FS typical
Environmental Conditions: Ambient temperature -25°C to +70°C, Media temperature -25°C to +80°C, Storage temperature -40°C to +80°C
Protection: IP40 (Microswitch IP67)
Vibration and Shock: 5 to 100 Hz: 2 g, Shock 50g/11ms
Mechanical Data: Housing made of PBTP, Crastin, Mounting torque max. 25 Nm
Electrical Connection: Blade connector IEC 2.8 x 0.5 mm

Dimensions and Electrical Data

Detailed dimensions for various configurations
Switching differential and tolerance settings for different pressure ranges
Electrical ratings for resistive and inductive loads

Additional Information

Routine test of leakage rate < 10–7 mbar·l/s
Documents and instructions available on Trafag's website

Catalog excerpts

PRESSOSTAT Swiss based Trafag is a leading international supplier of high quality sensors and monitoring instruments for measurement of pressure and temperature. ■ Machine tools ■ steel or bronze bellows ■ Medium voltage switchgear ■ Blade connector (IEC) 2.8 x 0.5 mm ■ Compact design ■ adjustment in factory subject to change Data sheet H72272r 02/2017 Trafag sensors & controls Switzerland www.trafag.com [email protected] trcifciqsensors controls

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Ordering information/type code XXX Custom 1 Floating change-over contact (SPDT) 987 build code 2 Floating change-over contacts (SPDT) 988 standard contacts, switching differential not adjustable 42 Gold plated contacts, switching differential not adjustable 84 Sensor material Pressure connection Range Bellows: Bronze (Cusn6) Brass (CuZn39Pb3), with groove for o-ring 78 939 Code specified by Trafag XX Fixing Direct on sensor or housing Accessories Blade receptacle (2.8 x 0.5 mm) and insulator for flat plugs (2 x 6 pcs.) switchpoint fixed and sealed upon customer's request switchpoint preset upon...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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