GCA/GCD Series Precision Gage Heads Spring-Loaded Design for ±0.050" to ±2.00" Range Measurement Features ❏CE compliant (DC models) ❏All-welded construction ❏Resistant to harsh environments ❏MS-type connector Increased side ❏Electronics hermetically sealed loading capability ❑Calibration certificate supplied with every gage head ® ❑Compatible with all Schaevitz signal General Specifications conditioners AC-Operated models ❑Special contact tips (see page 100) Excitation ............................... 3 V rms (nom) Frequency Range ................... 400 Hz to 10 kHz Applications Null Voltage ........................... Less than 0.5% full scale ❏In-process measurements to close loop with output Linearity ................................. ±0.25% of full range output PLC or CNC controller Repeatability ......................... 0.000025" (0.0006 mm) ❏Environments requiring hermetically sealed Operating Temperature ........ -65°F to 300°F transducers Range (-55°C to 150°C) Shock Survival ...................... 1000 g for 11 milliseconds ❏High temperatures (300°F for AC units) Vibration Tolerance .............. 20 g up to 2 kHz Housing Material .................. AISI 400 series stainless steel Stainless steel construction enables the GCA/GCD Series Electrical Termination ........... 6-pin connector gage head to perform in environments containing DC-Operated models moisture, dirt and other contaminants. Electronic components are hermetically sealed for added protection Excitation ............................... ± 15 VDC ±30 mA max against hostile conditions. These are heavy duty, long stroke Null Voltage ........................... 0 VDC units with ranges up to ±2.0" (50mm). Maximum spring force Linearity ................................. ±0.25% of full range output is typically 8 oz (226.8g), dependent upon probe position. Repeatability .......................... 0.000025" (0.0006 mm) The working end or probe has a removable chrome plated, Operating Temperature ......... 32°F to 160°F hardened tool steel tip threaded to the probe with a 4-48 Range (-0°C to 70°C) ® UNF-2A threading. Schaevitz replacement and alternate Shock Survival ...................... 250 g for 11 milliseconds contact tips are available (see page 100). Tips are also half sine interchangeable with AGD dial indicator tips. Vibration Tolerance .............. 10 g up to 2 kHz Housing Material ................... AISI 400 series stainless steel Internal construction prevents the core and shaft from Electrical Termination ........... 6-pin connector rotating as they move longitudinally. Units terminating into connectors allow for easy cable replacement if damage How to Order should occur. Installation and adjustment are facilitated by external threading; locknuts are provided. Specify the appropriate model number, followed by the desired Gaging Range suffix. For example: GCA-121-050 is GCA/GCD Series gage heads are available in AC and DC AC operated with a ±0.050" range. Special contact tips are versions. AC-operated units utilize external signal also available and can be ordered separately (see page 100). conditioning (see the Instrumentation section of this catalog); DC-operated units incorporate the core, LVDT Gaging and all necessary electronics in one housing. Use of Model Number Operation Range Description monolithic, surface mount circuitry eliminates most of the 050 ±0.050" (1.27 mm) GCA-121 AC volume, weight and cost of conventional AC excitation, 125 ±0.125" (3.17 mm) GCD-121 DC amplification and demodulation equipment. 250 ±0.250" (6.35 mm) E Wiring – AC Models +15VDC Wiring – DC Models 500 ±0.50" (12.7 mm) PRI SEC 1000 ±1.00" (25.4 mm) A + A 10VDC Reverse - 2000 ±2.00" (50.8 mm) De- Output Polarity Oscillator LVDT modulator Amp Protector E Connect B Readout (B) to (C) for differential C F output F -15VDC D D D Internet: www.schaevitz.com North America Tel: 800/745-8008 86 Document Fax Back: 916/431-6541 Europe Tel: (01753) 537622 GCA/GCD Series GCD Series models, when correctly installed, are CE certified to comply with the EMC Directive 89/336/EEC. Precision Performance Ranges: ±0.050" to ±2.00" AC or DC operated Dimensions in (mm) 0.218" (5.54)� Integral Monolithic Circuitry� All Models (DC Models Only) Hex Nuts A Models GCA and GCD� 0.75"� F B MS-Type Connector� (19.05)� E C Mates with PT06A-10-65� All Models D Connector 0.437"� 1/2-20 Thread� A� (11.09)� All Models Case Length Models GCA� C� and GCD Case and Thread Length B� Probe Fully Extended GCA Specifications @ 2.5 kHz – AC-Operated Models Model Number GCA-121-050 GCA-121-125 GCA-121-250 GCA-121-500 GCA-121-1000 GCA-121-2000 Gaging Range ±0.050" ±0.125" ±0.250" ±0.500" ±1.000" ±2.00" (±1.27mm) (±3.17mm) (±6.35mm) (±12.7mm) (±25.4mm) (±50.8mm) Phase Shift +6° +5° +5° +2° +1° -1° Sensitivity (mV/V/0.001") 4.2 2.4 1.6 1.1 0.84 0.34 Impedance (Ohms) Primary 430 1710 800 900 900 525 Secondary 950 1820 940 1150 2100 535 Pretravel (Nominal) 0.26" (6.6mm) 0.30" (7.6mm) 0.06" (1.5mm) 0.18" (4.5mm) 0.01" (0.3mm) 0.1" Minimum Overtravel 0.15" (3.8mm) 0.15" (3.8mm) 0.15" (3.8mm) 0.20" (5.1mm) 0.10" (2.5mm) 0 Spring Load Over 3.5 to 5.8 oz. 3.5 to 5.8 oz. 3.5 to 5.8 oz. 3.2 to 8.0 oz. 3.2 to 8.0 oz. 3.2 to 8.0 oz. Gaging Range (99 to 164g) (99 to 164g) (99 to 164g) (91 to 227g) (91 to 227g) (91 to 227g) Dimensions A (±0.01"/0.25mm) 1.90" (48.3mm) 2.75" (69.9mm) 3.61" (91.7mm) 5.29" (134.4mm) 7.55" (191.8mm) 10.89" (276.6mm) B (±0.03"/0.76mm) 4.33" (110.0mm) 5.14" (130.6mm) 6.10" (154.9mm) 10.75" (273.1mm) 13.01" (330.5mm) 20.94" (531.9mm) C (±0.02"/0.50mm) 3.27" (8.1mm) 4.12" (104.6mm) 4.99" (126.7mm) 8.27" (210.1mm) 10.53" (267.5mm) 16.37" (415.8mm) Weight 2.2 oz (64g) 2.9 oz. (82g) 3.17 oz. (90g) 5.0 oz. (142g) 7.5 oz. (213g) 13 oz. (369g) GCD Specifications – DC-Operated Models Model Number GCD-121-050 GCD-121-125 GCD-121-250 GCD-121-500 GCD-121-1000 GCD-121-2000 Gaging Range ±0.050" ±0.125" ±0.250" ±0.500" ±1.000" ±2.000" (±1.27mm) (±3.17mm) (±6.35mm) (±12.7mm) (±25.4mm) (±50.8mm) Sensitivity (V/1") 200 80 40 20 10 5 Pretravel (Nominal) 0.30" (7.62mm) 0.35" (8.8mm) 0.18" (4.5mm) 0.20" (5.08mm) 0.01" (.25mm) 0.1" Minimum Overtravel 0.39" (9.4mm) 0.14" (3.5mm) 0.03" (0.76mm) 1.00" (25.4mm) 0.10" (2.5mm) 0 Spring Load Over 3.5 to 5.8 oz. 3.5 to 5.8 oz. 3.5 to 5.8 oz. 3.2 to 8.0 oz. 3.2 to 8.0 oz. 3.2 to 8.0 oz. Gaging Range (99 to 164g) (99 to 164g) (99 to 164g) (91 to 227g) (91 to 227g) (91 to 227g) Dimensions A (±0.01"/0.25mm) 2.66" (67.6mm) 3.50" (88.9mm) 4.37" (111.0mm) 6.06" (153.9mm) 8.31" (211.1mm) 11.48" (291.6mm) B (±0.03"/0.76mm) 5.08" (129.0mm) 5.90" (149.9mm) 6.77" (172.0mm) 11.53" (292.9mm) 13.76" (349.5mm) 21.52" (546.6mm) C (±0.02"/0.50mm) 4.02" (102.1mm) 4.87" (123.7mm) 5.74" (145.8mm) 9.05" (229.9mm) 11.29" (286.8mm) 16.96" (430.8mm) Weight 2.5 oz. (71g) 3.2 oz. (93g) 3.5 oz. (100g) 5.5 oz. (156g) 8.0 oz. (227g) 14 oz. (397g) 87 See individual gage head Options and Accessories model specification pages for compatibility Special Contact Tips Connectors ® Seven different connectors Nine different Schaevitz contact tips are available for special applications and as replacements for standard tips are available to simplify ® installation of LBB and PCA supplied with most gage heads. All Schaevitz contact points are 4-48 AGD threaded. To order, select the proper Series gaging probes, including the PCA Series Bi- contact tip number. directional Lever Probe. To #2 #3 #4 #5 select the proper connector, 0.125 0.093 simply add the appropriate number to the end of the gage (3.18) (2.36) head part number. For example, by adding a 2 to a model number such as LBB375PA-020-2 allows the user to specify 0.375 0.375 0.375 0.50 (9.53) (9.53) a standard sensitivity gage head with an Amphenol-type (9.53) (12.7) 126-195 connector. 0.50 0.375 (12.7) Connector (9.53) Part Number Suffix Description #6 #7 #8 #9 #10 1 Bendix-type PTO6A-10-6P (SR) 0.156 0.281 (4.0) 2 Amphenol-type 126-195 (7.1) 3 Amphenol-type 165-13 0.25 0.50 (6.4) ® 4 DE-9 compatible with Schaevitz (12.7) 0.625 ATA2001 (15.9) 0.200 (5.1) 5 Switchcraft-type 12CL5-M compatible 0.200 0.200 ® (5.1) (5.1) with Schaevitz SYS-96 Dimensional Data 0.062 0.031 (1.6) Acquisition System (0.8) 6 LEMO-type CONN. FGG-OB-305- CNAD52 MS-Type Connector Cables 7 Switchcraft-type 05BL5-M compatible ® with Schaevitz MP series LVDT readout/ Consult factory for price and availability of adaptor cables controller for LVDTs and signal conditioners. Internet: www.schaevitz.com North America Tel: 800/745-8008 100 Document Fax Back: 916/431-6541 Europe Tel: (01753) 537622