Digital Panel Meters AMH-763 Set point comparator Voltage and Current Asahi Keiki


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Digital Panel Meter
2 Channel
Set Point Comparator with Digital and analog outputs
and USB option

Digital panel meters from Asahi Keiki
offer impressive specifications, reliability
and low cost for a variety of applications


AMH-763	Features Two input channels A&B *Several functions - A-B, A+B and more* Conversion rate 1 to 4000 per second Includes sensor power supply 24VDC, 40mA Power AC 100 - 240 Volts Direct setting function Data output BCD, RS232, RS485 USB, Analog output Relay or photo-coupler comparator output

DC Voltage Measurement

Accuracy ± 0.1% of full scale. (23°C±5°C, 35-85% Relative Humidity)

General Specifications

Specifications
Measurement function	Specify one measuring range from DC voltage, current ranges below.
Input Circuit	Single Ended
Operation method	dual slope
Input Bias Current	100 pA
Conversion Rate	1 to 4000 samples per second
Normal mode rejection	> 50dB (50/60Hz)
Display	7 segment LED, 14.2 mm red monitor sub display LED 8mm green
Memory Backup	E2PROM
Polarity	"-" automatic when result is negative
Decimal point	Set to any position
Over-range indication	'OL' LED flashes
Maximum Display	+/- 99999 ( 5 digits )
Decimal point	set to any position
Zero Display	Reading "zero" suppression
Power	AC 100 - 240 Volts 50/60Hz 20VA
Dielectric Strength	between power terminal and each input terminal, comms terminal and control terminals 500 V DC 1 minute 1500 VAC 1 minute
Insulation Resistance	DC 500V 100 MOhm at above terminals
Anti Vibration	half amplitude 10-55 Hz 0.15mm XYZ sweep in each direction 5mins x10
Weight	400 g
Dimension mm H x W x D	96 x 48 x 144.5 mm DIN
Sensor Power supply built in	24V DC, 40mA, ripple 100 mV p-p

External Control
Hold	Shorting between COM and S/H terminal or "0" level
Start	Open between COM and S/H terminal or "1" level
Digital zero	Value just before COM and DZ terminals are shorted, or input is set to "0", is displayed as "zero" and that value is stored
Peak Hold	Respective function is activatedd when COM and PH terminals are shorted or input level is set to "0"
Valley Hold
Peak Valley Hold
Pattern selection	Anyone of eight patterns is settable in combination of COM terminal with any of P SEL terminals 0, 1 and 2 "0" level less than 5 volts "1" level 3 - 30 volts input current less than -5 mA

Comparator

Control Method

Computation by microcomputer

Functions
K=a constant
A = input channel 1
B = 1nput channel 2

A+B
A-B
K-A
K-(A+B)
{(A-B)/|B|} x 1000
B/A x 1000
(1-B/A)x1000
(B/A-1)x 1000

Comparison Condition
High/High limit set-value < measured value			HH
High/High limit set-value > measured value			HI
High/High limit set value High limit set value	>/= measured value>/=	Low/Low limit set value Low limit set value	GO
Low/low limit set-value > measured value			LO
Low/Low limit set-value < measured value			LL

Comparison output Relay
contact capacity

250 Volts AC 1.0 resistive load
30 Volts DC 20 mA resistive load

Photo-coupler output

sink current 20 mA max )less than 30 V.
Output saturation voltage < 1.2 Volts at 20 mA

Optional Outputs

BCD output (isolated from input (LO))

Connector

34 pin MIL standard

Output

BCD signal

Control Input

Allow output (ENABLE)
COM and the short ENABLE each output is OFF
(Open Collector: transistor OFF, TTL: high-impedance)
ON voltage: 0 ~ 0.8 V, OFF voltage: 3 ~ 5 V, input current: -0.5 mA:
NPN open-collector output：	DC30V 10mA (MAX) saturation voltage output: 1.2 V:

TTL output：

Positive logic, TTL level (CMOS-compatible) 2 fanout

Resolution

Allow output (ENABLE)

Measured data

Negative logic
NPN open-collector outpug

Transistor output capacity

Applied Voltage 30 V max, Current 10mA max.
Output saturation voltage less than 1.2 V at 10 mA
TTL output is also available

USB (isolated from input (LO)) and RS232
Connector	B connector (Rev 1.1/2.0)	RS232 - DSUB 9 Pin
Communication method	Virtual COM port (USB)
Synchronous method	Asynchronous
Transmission speed	9600/19200/38400 bps
Start Bit	1 Bit
Data length	7,8 Bit
Error detection	Even parity
Stop Bit	1,2 Bits
Parity	Even Odd protection
Operating systems supported	Windows XP-SP2, Vista (32 bit)

RS485 (isolated from input (LO))
Synchronous method	Asynchronous
Transmission speed	9600/19200/38400 bps
Data length	7,8 Bit
Error detection	BCC (Block Check Character) Check sum
Stop Bit	1,2 Bit parity; even, odd protection
Cable length	up 500 m total
Number of connection (daisy chain)	up to 31

Analog Output (isolated from input (LO))
Any display range to output analog signal can be set

Resolution

16 Bits

Output Response

< 0.5 secs

Ordering Information

AMH-763-VA-1-XY	Use the part numbers below to select your output options.
Affix X Comparator output	1 = relay 2 = photo
Affix Y Data Output	1 = None 2 = BCD 3 = BCD TTL 4= RS232 5=R485 6=USB 7=Analogo	$1074.00 $1196.00 $1196.00 $1135.00 $1135.00 $1135.00 $1227.00

Topac Inc. 231 CJC Highway, Suite 103 Cohasset MA 02025 USA
Tel: 781 740 8778 Fax: 781 740 8779
e-mail: sales@topac.com