keller keller ag f?r druckmesstechnik st. gallerstrasse 119 ch-8404 winterthur tel. 052 - 235 25 25 fax 052 - 235 25 00 keller gesellschaft f?r druckmesstechnik mbh schwarzwaldstrasse 17 d-79798 jestetten tel. 07745 - 9214 - 0 fax 07745 - 9214 - 50 companies approved to iso 9001 / en 29001 4/99 internet: http://www.keller-druck.ch subject to alterations this new range of keller oem pressure transmitters and transducers offers the user the high accuracy and stability of the keller piezoresistive pressure capsule in a low cost oem package. applications include refridgeration, hydraulic controls, air compressors, ink jet printers, vacuum pumps etc. the silicon sensor is mounted in an all welded oil filled stainless steel capsule, providing a highly stable measuring cell with negligible hysteresis, unrivalled linearity, high output and a life of millions of pressure cycles. the series 21r use the series 6 capsule, which is of all welded 316l stainless steel construc- tion. transducers are supplied with 2 metres of screened cable, or a square connector and mating plug, type mpm-193. accuracy is achieved by very large scale predictable production quantities of the pressure capsule (over 2 million produced today). reliability is assured by the inherent properties of the perfectly elastic silicon chip, and ensuring that neither the pressure media nor the reference media (in the gauge version) come into contact with any sensitive parts. temperature compensation: each unit is fully tested and compensated. span errors are reduced by selecting the semiconductor doping levels so that the gauge factor of the strain gauges ( ? r) is constant with temperature. thermal zero compensation is achieved by an automatic test procedure which fits a single resistor across one arm of the bridge. shock and vibration performance is excellent due to the silicon chip being suspended in the oil-filled capsule. it is isolated mechanically from the body. similarly, the effects of mounting torque are eliminated. p iezoresistive t ransmitters and t ransducers i ndustrial a pplications . a bsolute and g auge r eferences . s eries 21 r ~ 50 ?18,6 g 1/4" hex 19 ?17 s eries 21r with c able (p lan 80096.2) ~ 56 8 12 g 1/4" ?17 hex 19 cable connection mpm-connector (contact spacing 9,4 mm) s eries 21r with p lug (p lan 80096.3) e lectrical c onnections 2-w ire 3-w ire 4-w ire green gnd gnd ( white ) white out/gnd +out +out ( red ) brown +v cc +v cc +v cc ( black ) -out ( blue ) 2-w ire 3-w ire 4-w ire 1 out/gnd gnd gnd 2 +out +out 3+v cc +v cc +v cc 4 -out
keller ag f?r druckmesstechnik st. gallerstrasse 119 ch-8404 winterthur tel. 052 - 235 25 25 fax 052 - 235 25 00 keller gesellschaft f?r druckmesstechnik mbh schwarzwaldstrasse 17 d-79798 jestetten tel. 07745 - 9214 - 0 fax 07745 - 9214 - 50 companies approved to iso 9001 / en 29001 4/99 internet: http://www.keller-druck.ch subject to alterations keller druckmesstechnik specifications series 21 r pr 21 r * 0,5 1,0 1,6 2,5 6 10 16 bar vented gauge paa 21 r 1,0 1,6 2,5 6 10 16 bar absolute pa 21 r 1,0 1,6 2,5 6 10 16 25 50 100 160 250 400 600 bar sealed gauge over range 2 2,5 3 6 8 15 25 60 75 150 250 600 600 800 bar * mpm connector only, not cable transmitter transducer signal output 4?0 ma 0? vdc 1? vdc 0?0 vdc 0?00 mv supply voltage 8?8 vdc 13?0 vdc 8?8 vdc. 10 vdc current required up to 20 ma 4 ma max. 2 ma max. zero/span tolerance 1% fs 1% fs** 1% fs 1% fs** 0,1% fs configuration 2 wire 3 wire 4 wire electrical connection: out/gnd: pin 1 / white gnd: pin 1 / green gnd: pin 1 / white mpm 193 micro or +out: pin 2 / white +out: pin 2 / red cable 2m, 4 core +vcc: pin 3 / brown +vcc: pin 3 / brown +vcc: pin 3 / black -out: pin 4 / blue linearity 0,2 % typ. / 0,5% max. 0,2% typ. / 0,5% max. total error band* 1% max. / 0,5% typ. 0,5% max. +18?22? total error band* 2% max. / 1,0% typ. 1,0% max. 0?50? total error band* 4% max. / 2,5% typ. 2,5% max. -20?80? * total error band includes linearity, hysteresis, zero and span offsets, temperature effects and repeatability. **signal at zero 50 mv --> see chart maximum temperature -20?80? (on demand -40?00?) pressure port g 1/4 male parallel to iso 228 (1/4?sp) pressure media compatible with 316l stainless steel weight 75 gramme electromagnetic compatibility ce marked: fully tested to en 50082-2 and en 50082-1 enclosure protection ip65 insulation greater than 100 m ? at 50 vdc insulation test 1 minute at 500 vdc user notes: basic 100 mv transducers are calibrated at 10 vdc to produce 0?00 mv signal (nominal), and require a stable voltage supply. they can be operated at 5 vdc to give 0?0 mv signal or 20 vdc to give 0?00 mv signal. the circuit is a compensated resis- tance bridge and is completely passive with no diodes or reactive components. bridge resistance is 3,5k ? nominal. the 8?8 v supply transducer is fitted with an internal regulator. the mpm micro connector has a pg7 cable gland entry suitable for cables between 4 and 6 mm diameter. screw terminals and solder lags are provided. the g 1/4 pressure connection has an integral viton seal at the shoulder. alternatively it may be sealed using a face seal on the flat nose of the pressure port. 50 mv 5v/10v 1%fs fs signal at zero for 0 5 v (0 10 v) transmitters
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