Warranty
2103,2104
METER RELAY
Instruction Manual
Aug. 2018 Revised edition 3
2103A981-03 18-08H
Warranty malfunctions occurring under conditions of normal use in
conformity with the Instruction Manual and Product Precautionary
Markings will be repaired free of charge. This warranty is valid for a
period of three (3) years from the date of purchase. Please contact
the distributor from which you purchased the product for further information on warranty provisions.
Introduction
Thank you for purchasing the HIOKI Model 2103, 2104 Meter Relay.
To obtain maximum performance from the product, please read this
manual first, and keep it handy for future reference.
Overview
This product is an electronic non-contact meter relay. Unlike conventional oscillator or photoelectric-type products, which detect the operating point based on
the location of the indicator, the Hioki product uses an input for direct relay
operation. This eliminates erroneous operations caused by indicator overshoots or friction. The product is also equipped with easy-to-see LED lamps for
display of the operating status.
Inspection
When you receive the product, inspect it carefully to ensure that no damage
occurred during shipping. If damage is evident, or if it fails to operate according
to the specifications, contact your dealer or Hioki representative.
Preliminary Checks
Before using the product, make sure to inspect it carefully, referring as needed
to the list of points for periodic inspection, to verify that it operates properly and
to ensure that no damage occurred during shipping or storage. If you find any
damage, contact your dealer or Hioki representative.
Specifications
(Accuracy guaranteed for one year at 23°C±5°C(73°F±9°F), 80%RH or less.) This manual contains information and warnings essential for safe operation of
Maximum scale value
Setting system
Indicating-instrument
section
Class
Indicator shape and
color
Indicator operating
range
Instrument
characteristics
Setting indicator section
Shape and color
Setting range Within the scale for both H and L
Minimum H/L interval Within 3% of the scale length
Setting accuracy
Dead-zone width Within 0.5% of the scale length
Relay operation
Control-status
indication
Delay time at power
ON
Response time
(time constant)
Contact structure One transfer for both H and L
Relay ratings
Current capacity 5 A (250 VAC, 30 VDC) (resistance load)
Insulation
resistance
Dielectric strength 5000 VAC for 1 min (between the contact and coil)
Electrical service life Approx. 100,000 times (5 A)
Maximum rated
voltage to ground
Dielectric strength
Power source
Maximum rated power 3 VA
Operating
temperature and humidity
Storage temperature and
humidity
Location for use Indoors, altitude up to 2000 m (6562-ft.)
Dimensions
Mass
Accessories
Product warranty period 3 years
According to the rating
(to be specified at the time of ordering)
HL type (upper/lower-limit setting),
H type (upper-limit setting)
L type (lower-limit setting)
(electronic type, non-contact system)
2103: Class 2.5
2104: Class 1.5
0.3 pin, black
Within the scale (passing system)
In accordance with JIS C1102
Spear shape H indicator (upper-limit side): Red
L indicator (lower-limit side): Green
Within 1.5% of the maximum scale value
(independent from the instrument section)
H/L operation indication lamps
Approx. 2 sec (standard model)
Approx. 0.5 sec (standard model)
500 VDC, 1000 M or higher
(between the contact and coil)
300 VAC/DC
3536VAC for 15 sec
(between the instrument circuitry and the casing,
between the power supply and the casing)
100 V/200 VAC
(to be specified at the time of ordering)
50 Hz/60 Hz
(Voltage fluctuations of ±10% from the rated supply
voltage are taken into account.)
0 to 40°C (32 to 104°F) 80%RH or less
(no condensation)
-10 to 50°C (14 to 122°F) 80%RH or less
(no condensation)
2103
Approx.84W × 72H
× 117.6D(rear section), 25.9(front section) D mm
Approx.3.31”W × 2.83”H
× 4.63”D(rear section),1.02”D(front section)
2104
Approx.104.4W × 88.4H
× 117.6(rear section),25.9(front section) D mm
Approx.4.11”W × 3.48”H
× 4.63”D(rear section),1.02”D(front section)
(2103) Approx.480 g, Approx.16.9 oz.
(2104) Approx.460 g, Approx.16.2 oz.
Instruction Manual ........................................... 1
U-shaped mounting hardware (2103)............... 1
mounting screws (2103) ................................... 2
nuts (2104) ....................................................... 4
spring washer (2104)........................................ 4
Safety Notes
the product and for maintaining it in safe operating condition. Before using it,
be sure to carefully read the following safety precautions.
• Mishandling this product during use could result in injury or
death, as well as damage to the product. Be certain that you
understand the instructions and precautions in the manual
before use. We disclaim any responsibility for accidents or
injuries not resulting directly from product defects.
• HIOKI is not responsible for problems associated with malfunctions of the 2103 and 2104 caused by other systems and
devices that use the 2103 and 2104 Meter Relay.
Safety Symbols
In the manual, the symbol indicates particularly important
information that the user should read before using the product.
The symbol printed on the product indicates that the user
should refer to a corresponding topic in the manual (marked with
the symbol) before using the relevant function.
Indicates AC (Alternating Current).
Indicates DC (Direct Current).
The following symbols in this manual indicate the relative importance of cautions and warnings.
Indicates that incorrect operation presents an extreme hazard that
could result in serious injury or death to the user.
Indicates that incorrect operation presents a significant hazard that
could result in serious injury or death to the user.
Notes on Use
Follow these precautions to ensure safe operation and to obtain the full benefits of the various functions.
• Do not allow the product to get wet, and do not take measurements with wet hands. This may cause an electric shock.
• Before turning the product on, make sure the supply voltage
matches that indicated on the its power connector. Connection to an improper supply voltage may damage the product
and present an electrical hazard.
• When the product is connected, do not touch the power-supply terminals or input terminals. Touching them may cause
electric shock or injury since live lead sections are exposed.
• To avoid electrical accidents, confirm that all connections are
secure. The increased resistance of loose connections can
lead to overheating and fire.
• Do not supply power exceeding the ratings. A nonconforming power supply may cause damage or short-circuiting in
the product.
• To prevent the risk of electric shock and other accidents, the
product must be mounted on a panel in such a way that the
rear panel of the product cannot be touched. Never use the
product on its own.
• When mounting the product on a panel and when wiring the terminals, wear suitable protection as prescribed by labor safety
regulations, such as electrical safety gloves, electrical safety
boots, and a safety hat to prevent the risk of electricshock.
• To avoid electric shock, do not remove the product's case.
The internal components of the product carry high voltages
and may become very hot during operation.
• The signal input circuit and meter circuit of the product are
not insulated. Should the meter section or dial be damaged,
electric shock may result. If the product becomes damaged,
discontinue its use immediately and contact your dealer or
Hioki representative.
• This product is designed for use indoors. It can be operated at temperatures between 0 and 40°C without degrading safety.
• This product is not designed to be entirely water- or dust-proof. Do
not use it in an especially dusty environment, nor where it might be
splashed with liquid. This may cause damage.
• Do not store or use the product where it could be exposed to direct
sunlight, high temperature or humidity, or condensation. Under
such conditions, the product may be damaged and insulation may
deteriorate so that it no longer meets specifications.
• Be careful to avoid connecting the supply voltage improperly. Doing
so may damage the instrument's internal circuitry.
• To avoid breaking the cables, do not bend or pull them.
• Do not apply excess force to the meter glass surface. Pressing on
the meter glass surface may break the glass and cause injury.
If the glass is altered, the setting indicator may become deformed
and interfere with the meter, thus preventing proper operation.
• Set the H/L dial within the meter operating range. Forcibly turning
the dial outside the operating range and beyond the stopper position may cause internal setting deviation, damage, or malfunction.
• For HL type, H indicator should be used on the right side of L indicator. Forcibly moving indicators while they are in contact may
cause damage.
• Do not use the product in a location where it will be exposed to dust, organic gas, or sulfuric gas, as they may cause relay-contact problems.
• Note that vibration and shock may cause faulty contact between the
relay and socket.
Maintenance and Service
Never modify the product. Only Hioki service engineers should
disassemble or repair the product. Failure to observe these precautions may result in fire, electric shock, or injury.
Periodic Inspection
• Change the H (L) indicator setting occasionally to confirm proper operation
of the meter relay. For example, move the H setting indicator to a position
lower than the normal value indicated by the meter, and confirm that the H
relay operates.
• Check the upper/lower-limit setting dials for damage.
• Confirm that the indicator of the instrument is at the zero position when there
is no input. If the indicator deviates from the zero position, make an adjustment using the zero-adjustment dial.
• Clean the meter glass surface with a dry cloth regularly to ensure clear visibility of the meter indicator at all times.
• If the product is used in an application that involves frequent relay operations, replace the relay regularly. In such an application, the contact resistance may increase and prevent proper operation. (The electrical service life
at the rated load is approximately 100,000 times.)The relay cannot be
replaced by the user. Contact your dealer or Hioki representative.
Maintenance
To clean the product, wipe it gently with a soft cloth moistened with water or
mild detergent. Never use solvents such as benzene, alcohol, acetone, ether,
ketones, thinners or gasoline, as they can deform and discolor the case.
Service
If the product seems to be malfunctioning, contact your dealer or Hioki representative.Pack the product so that it will not sustain damage during shipping,
and include a description of existing damage. We do not take any responsibility
for damage incurred during shipping.
Processing the Panel
2103
2104
1. Remove the U-shaped mounting hardware.
2. Mount the product on the front of the panel.
3. Mount the panel on the rear of the meter, and clamp the panel using the U-
shaped mounting hardware. Be sure to use the supplied screws to securely
tighten the U-shaped fixture. Use a force of 0.2 to 0.3 N•m torques.
1. Mount the product on the front of the panel.
2. Use the supplied nuts and spring washer to clamp the product and
panel.
2103
(HL Type)
Lower-limit operation
LED (green)
L indicator
(green)
Zero-adjustment
dial
Upper-limit operation
LED (red)
H indicator
(red)
Instrument
indicator
2104
(HL Type)
Zero-adjustment dial
H level-setting dial
L level-setting dial
2103
(HL Type)
U-shaped mounting hardware
Relay contact output terminal
Panel fastening
screw
2104
(HL Type)
Input terminals
(INPUT±)
Power-supply
terminals
L relay
(not provided on
the H type)
H relay
(not provided on
the L type)
HIGH LOW
INPUT 100 VAC
Start
Switch
Reset Switch
Stop
Switch
M
H
c b a
H
b c
MC
R
Bz
cc2c1
MC
HRR
aa2a1
CT
By referring to the dimensions shown in the diagram below, process
the panel. (The panel thickness should be between 1.5 mm and 5 mm.
For the 2104, holes must be drilled at four locations.)
Parts Names
Front Panel
• Excessive noise in the power source may cause malfunctions. Make sure to
take any necessary precautions, such as attaching a ferrite clamp to the
power cord.
Rear Panel
• For safety, install a power cutoff switch or a circuit breaker near this
device.
• Be careful not to connect wires to the power-supply terminals improperly. Doing so may damage the instrument’s internal circuitry.
2103, 2104 (Rear view)
Terminal Arrangement (When power is off)
Mounting on the Panel
2103
2104
(The H type and the L type have only one operation LED on either side
and only one level-setting dial on the right.)
Meter (scale plate) ................ Scale specified by the customer at time of purchase
H level-setting dial .............. Used to set the upper-limit level
L level-setting dial............... Used to set the lower-limit level
Upper-limit operation
LED (red) ............................ When the meter indicator moves past the location
of the H indicator, the H relay operates and the
LED lights up.
Lower-limit operation
LED (green) ........................ When the meter indicator falls past the location of
the L indicator, the L relay operates and the LED
lights up.
Zero-adjustment dial........... Used for zero-point adjustment under no-input
conditions
If the H and L setting indicators contact with each other,
do not forcibly turn the setting dial; otherwise, the setting
indicators will be damaged.
H relay ....Operates when the red LED turns on (continuity between a and c)
L relay ..... Operates when the green LED turns on (continuity between a and c)
Connections to Terminals
Signal input
• Check the positive and negative polarities when connecting a DC input.
• When the product is connected in series to a load in a power line, connect
the product to the ground potential (lower potential) side whenever possible.
• In the case of DC, if the maximum scale value exceeds 20 A, use a shunt. If
it exceeds 300 V, use a multiplier.
• In the case of AC, if the maximum scale value exceeds 5 A, use a CT. If it
exceeds 300 V, use a multiplier.
• When an extremely small DC signal is input, use a shielded cable for noise
prevention.
• Make sure the terminal screws are fastened tight. Loose terminal screws
may cause malfunctions or accidents. (at tightening torque of 1.2 N•m)
Relay-contact output
• The diagram on the label located on the top surface of the product indicates
the contact status in the non-operating condition. When the relay operates,
continuity is established between a and c. Design a sequence accordingly.
• The relay contact capacity is 5 A (resistance load). When an induction load is
connected, reduce the load to prevent it from shortening the service life of
the contact.
• Make sure the terminal screws are fastened tight. Loose terminal screws
may cause malfunctions or accidents. (at tightening torque of 0.5 N•m)
Power-supply connection
• Connect a power supply conforming to specifications.
• The product is equipped with a delay function to prevent operation of the
relay for approximately two seconds after the power is turned on. This allows
the use of power output from the power-supply unit of the controlled equipment.
• Select a power cable of sufficient current-carrying capacity and withstand
voltage, considering the power consumption and supply voltage. (Power
consumption: 3 VA)
• Make sure the terminal screws are fastened tight. Loose terminal screws
may cause malfunctions or accidents.(at tightening torque of 0.5 N•m)
Connection example
Prevention of overload operation of the motor
Meter relay used: H type AC ammeter equipped with starting-current protection
• After the terminals are connected, check to confirm that the signal
lines do not come in contact with adjacent power cables.
• When using CT, be sure to ground the signal line for connection to
the -terminal of the measuring instrument in order to ensure safe input.
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