Radian RM-111 User manual

Operations Manual
Radian Research, Inc.
RM-111
Automated Comparator

RM-111
Operations Manual
Operations Manual
Radian Research, Inc.
Radian Research reserves the right to change
any information provided within this document
without notice. 11-14
944012.B
Automated Comparator

RM-111 Operations Manual
Contents
Contents
3
1.0 Product Introduction ................................................. 5
1.1 Features ......................................................................................... ............................6
2.0 Specifications .........................................................8
2.1 Physical ......................................................................................................................8
2.2 Electrical .....................................................................................................................8
2.3 Environmental .............................................................................................................8
2.4 Accuracy .....................................................................................................................9
2.5 Inputs (Ports A, B, C and D) .......................................................................................9
2.6 Outputs (Port D Only)................................................................................................10
2.7 Output Accessories ...................................................................................................10
3.0 RM-111 Keypad Conventions ...................................... 12
4.0 Menu Structure ...................................................... 15
4.1 Main Menu................................................................................................................15
4.2 Detailed Description of Menu Items ..........................................................................19
5.0 Inputs ................................................................. 22
5.1 Reference Standards (Open Collector).......................................................................22
5.2 Device Under Test (D.U.T.) ........................................................................................22
5.3 RM-1S ......................................................................................................................22
6.0 Outputs (Port D Only)................................................ 23
6.1 RM-1P ......................................................................................................................23
6.2 Open Collector ..........................................................................................................23
6.3 RM-1R, Electronic/Mechanical Potential Relay .........................................................23
7.0 Testing a Standard using the Average of One to Three
Reference Watthour Standards ................................... 24

RM-111 Operations Manual
Contents
Contents
4
8.0 True Three Phase Standard Testing ................................30
9.0 Testing a Radian Standard (Display Gating).......................35
10.0 Testing an Electromechanical Standard...........................40
11.0 Testing an Electronic Standard with Taps (Potential Gating) ..45
12.0 Testing an Electronic Standard (Electronic Gating) .............50
13.0 Testing an Induction or Solid State Meter Via KYZ ..............55
14.0 Testing a Solid State Meter Using Calibration LED Output
or Induction Meter Using an Edge Test ............................62
15.0 True Three Phase Meter Testing Using Customer Load .........69
16.0 Testing the Accuracy of a Test Board
(RM-1P Electronic Light Valve Option).............................74
17.0 Testing the Accuracy of a Test Board
(Open Collector Option) ..............................................77
18.0 Interfacing a Solid State Meter to a Test Board
(Open Collector Option) ..............................................80
19.0 Interfacing a Solid State Meter to a Test Board
(RM-1P Electronic Light Valve Option).............................83
20.0 Pulse Constants and Kh values for the RM-111 ..................86
21.0 Calculations............................................................87
22.0 Testing Accessories ..................................................89
23.0 Warranty Service ......................................................96

RM-111 Operations Manual
Product Introduction
Product Introduction
5
1.0 Product Introduction
The RM-111 Automated Comparator is a compact, easy to use, hand-held instrument that allows
for digitally comparing a primary reference standard (usually one, two or three Radian RM or RD
primary standards) to any standard, test board, or solid state or induction meter. The RM-111 uses
precise digital counters to count and compare calibration pulses from either reference standards
or billing meters. The RM-111, after programmed with specific test parameters, automatically
calculates and displays results in a user defined display of either percent registration or percent
error.
For field use, the RM-111 provides the user with an efficient means of testing both solid state
and induction meters. The RM-111 tests true three phase and series single phase and provides
calculations for full load, power factor, light load and demand. With capabilities to store results for
up to 100 meter tests and 28 standard tests, the RM-111 is a cost efficient alternative to carrying
expensive notebook computers in the field. For further test enhancement, the RM-111 can be
used with various Radian software applications for data collection and device/test configuration.
In addition to saving and uploading test results, the RM-111 can print results using the RM-RPP
Portable Printer.
Note: If you have a RM-RPP printer serial number 100017 or larger you will need to configure the
printer for 1200 baud and use a null adapter (supplied with printer). The printer will not function
correctly without the setup procedure being performed. For detailed instruction consult the
instruction CD supplied with the printer (see section 6 “Function Setting”).
In the meter shop, the RM-111 automates testing of any electronic or electromechanical watthour
reference standard. Up to three reference standards can be averaged together to provide a more
precise and repeatable references. The RM-111 can also sum up to three reference standards for
the testing of both polyphase standards and meters. In the laboratory, test automation is achieved
by using existing voltage and current sources with the RM-111 and Radian software. This
combination provides result calculation, data management and uploading options.

RM-111 Operations Manual
Product Introduction
Product Introduction
6
1.1 Features
• Tests any electronic or mechanical standard
• Tests any test board
• Tests any solid state or induction meter
• Operates as a pulse divider for interfacing with other products
• Ability to average or sum up to three reference standards
• Preforms single phase or polyphase testing
• Environment resistant
• Powered from a 9 volt battery or AC adapter
• Optional on-site printing capabilities
• Optional potential gating capabilities
• Optional Radian software applications available for data collection and
device/test configuration
• Stores up to 80 meter and 12 standard test setup
• Stores results for up to 150 meter and 28 standard tests
• Utilizes pulse counting as the preferred testing method
• Low battery indication

RM-111 Operations Manual
Product Introduction
Product Introduction
7

RM-111 Operations Manual
Specifications
Specifications
8
2.0 Specifications
2.1 Physical
Length: 190mm (7.5")
Width: 105mm (4.0")
Height: 33mm (1.25") approx.
Weight: .85 lbs approx.
Case Construction: Flame resistant ABS plastic with
polycarbonate label / keypad.
Keypad good for 1 million cycles
2.2 Electrical
Power: 9 volt battery or 9-12 volt AC adapter
Power Consumption: 171 mW typical, 1.150 W maximum
2.3 Environmental
Temperature: -20º to 70º C (-4º to 158º F) normal
operating conditions
Relative Humidity: 0 - 95%
Shock and Vibration: Any which is nondestructive
Water Resistance: Unit is splash proof, but it is not air
tight
Orientation: Any, unless using the RM-1R electronic/mechanical relay
accessory.When using the electronic option, the arrow in the
relay box must remain in the upward position with repect to
the horizon.

RM-111 Operations Manual
Specifications
Specifications
9
2.4 Accuracy
Digital Gating
Total % Error: Open collector less than: .0001
Potential Gating
Total % Error: Electronic output less than:
(.0005 sec / T) + (Ipot * .02 ohms / Vpot) * 100
Potential Gating
Total % Error: Mechanical Output less than:
(.002 sec / T) + (Ipot * .004 ohms / Vpot) * 100
(T: length of test in seconds)
(Ipot: current draw of potential)
(Vpot: potential test voltage)
2.5 Inputs (Ports A, B, C and D)
Pull-Up Port A: 150 ohm
Pull-Up (Ports B, C, D): 150 ohm / 1000 ohm, user defined,
Maximim Input voltage (Ports A and B): 5 volts - 500mW zener clamp at 6.2 volts (85mA
maximum zener current)
Maximum Input Voltage (Ports C and D): 25 volts - 500 mW zener clamp at 33 volts (14.4mA
maximum zener current)
Maximum Frequency (Ports A - D): 2.1 MHz per port
Minimum Input Pulse Width (Ports A - D): 200nS
Schmitt Trigger Levels: Ports A and B Ports C and D
Positive going threshold Max.: 1.90V 2.10V
Positive going threshold Typ.: 1.39V 1.65V
Negative going threshold Typ.: 0.67V 0.93V
Negative going threshold Min.: 0.23V 0.53V
Minimum hysteresis: 0.40V 0.40V
Maximum hysteresis: 1.40V 1.40V