The model 2206 pH transmitter designed to fit
into either an ANSI or DIN sized thermocouple head. The extended low voltage
operating range allows for use with 12V DC as well as the usual 24V DC sources.
A Pt100 can be connected to the transmitter to
provide precise temperature compensation. Where temperature compensation is not
required, a suitable value resistor can be connected instead, a 110ohm (25°)
resistor is fitted as standard. The green LED indicates that the device is
active..
The device has a rugged design and the
electronics are encapsulated for added protection. It operates over a wide temperature range and
has excellent RFI immunity. The 4-20mA
terminals have reverse polarity protection to prevent damage.
This conductivity switch is a low cost switch for use in applications
where the temperature of the solution remains constant to within a few degrees.
The unit was designed in South Africa using high quality components which in
turn makes it highly reliable with good accuracy and repeatability.
A low
voltage sine wave signal is applied across the two electrodes and the
conductivity is compared with an adjustable set point on the front of the
module.
The model 2007 can be factory calibrated to work with most standard
electrodes.
The model 1801L is an economically priced, loop powered PT100 temperature transmitter for two and three wire sensors designed and manufactured in South Africa. It is designed to fit into either KH or DIN sized heads and
is suitable for use with fixed or spring mounted assemblies. It is available in various temperature ranges up to 600°C with a minimum span of 50°C.
The extended low voltage operating
range allows for use with 12V DC as well as the usual 24VDC sources and makes use of a constant current input circuit to improve accuracy.
The design is totally analogue and no programming
is required. Trimming and re-calibration requires no special tools or software. Zero and span trimmers provide a user adjustment for fine trimming of the transmitter.
The green LED indicates
that the device is active and the brightness indicates that the circuit is functioning correctly as the intensity changes with the 4-20mA output.
The device has a rugged design and the electronics
are encapsulated for added protection. It operates over a wide temperature range and has excellent RFI immunity. It can be used in conjunction with our series Q4000 digital indicators to provide a complete temperature
monitoring or control system.
The model 2106 is an economically priced,
loop powered potentiometer transmitter for use with three wire reed chain type
level sensors. Designed and manufactured in South Africa, it is designed to fit
into either KH or DIN sized heads and is suitable for use with fixed or spring
mounted assemblies. It will work with
all reed chains from 100 Ohm to 10000 Ohm.
The extended low voltage operating range
allows for use with 12V DC as well as the usual 24VDC sources and makes use of
a constant current input circuit to improve accuracy.
The design is totally analogue and no
programming is required. Trimming and re-calibration requires no special tools
or software. Zero and span trimmers provide a user adjustment for fine trimming
of the transmitter.
The green LED indicates
that the device is active and the brightness indicates that the circuit is
functioning correctly as the intensity changes with the 4-20mA output.
The model 2009 liquid
level controller works by sensing the conductivity of the liquid in which the
probes have been inserted.
Three electrodes are normally used, high, low, and
common. The common electrode
can be the tank if it is metal.
The electrodes can be made of any electrically
conductive material to suit the liquid, for example, graphite or stainless
steel is usually preferred for water.
It can also be used with float switches.
There are 6 DIP
switches that can be used to change the relay action, sensitivity and relay
switching time delay. These are situated on the base of the unit.
This aids in
the prevention of tampering when the unit is mounted in the panel.
The model 1802 is an economically priced, microprocessor controlled, alarm and trip unit designed and manufactured in South Africa. It will accept either a 0-20mA or 4-20mA signal and has two independently programmable
SPDT set point relays.
The unit is supplied in the standard 11-pin plug-in format to facilitate ease of mounting and replacement. It is designed using high quality surface mount electronic components,
which in turn makes it highly reliable with good accuracy and repeatability.
The front of the unit has the two set point adjustments scaled 0-100% and 3 LEDs indicating the relay status
and power on. DIP switches on the back provide user settings for the selection of a 0-20mA or 4-20mA input signal, relay make or break on rising signal, open loop detection and an optional 15 second start-up delay.
A current limited on-board 24V DC power supply is provided, and this can be used to power a 2-wire transmitter.
The model 1802 is available in 115V AC, 230V AC or 24V DC supply. This unit
can be used with our model 1801L in head Pt100 temperature transmitter to provide a complete system for over temperature warning in any system requiring protection.
The series Q4000 are microprocessor controlled 4 digit programmable digital indicators designed to accept either a 0-20mA or 4-20mA signal. Locally manufactured, they are based on the industry standard 96x48mm format.
They are available in 230V AC, 115V AC or 24V DC isolated supplies and optional extras include 2 SPDT relays for alarm and trip applications. Relay set points, hysteresis, and response
times are individually programmable. On-board isolated power supplies can be provided to power the 4-20mA loop and 4-20mA retransmission signals. Both power supplies are current limited to prevent damage
to the indicator or ancillary equipment.
All of the features are easily programmable using the buttons on the front panel. These include Set Point, Relay action and response time.
The display can be scaled within the range -999 to +9999 for direct reading of the process variable. The security feature allows supervisors to restrict access to critical settings.
This instrument can
be used with loop powered transmitters to provide monitoring of a variety of industrial processes at an economical price.
The DS8B digital indicator/controller is microprocessor controlled and fits the industry standard 96x48mm cut out.
The indicator is available two power supply options 18-30V DC or 90-260V AC.
The
input can be programmed to accept signals from a variety of sources including
thermocouples, PT100, DC/AC Amps (with the use of a shunt or CT), mA or DC/AC Volts.
The indicator has 2 N/O relays and on-board power supplies to power the 4-20mA loop and the 4-20mA retransmission
signal. Both are current limited to prevent damage to the indicator or ancillary equipment.
All of the features are easily programmable using the buttons on the front panel. These include Set Point, Relay
action and hysteresis. The display can be scaled within the range -999 to +9999 for direct reading of the process variable. The second (SV) display indicates the set point of relay 1 and programming variables.
Designed and manufactured in South Africa, the model 1904 Signal Converter uses solid state technology and is designed to accept a variety of input signals. These include DC volts, millivolts, milliamps and resistance signals
from either 2 or 3-wire potentiometers. These signals can be converted to standard transmission signals such as 4-20mA or 1-5V. Current outputs can be sourced from an on-board unregulated 24V power supply or it
can sink from an external power supply. The input and output are not isolated.
In addition, this signal converter can be used to convert from one transmission signal to another and can
also be used for signal expansion.
This signal converter is made using high quality components making it very reliable with good accuracy and repeatability. The front of the box has an LED
indicating power on. Access to the zero and span adjustments are also available to allow for calibration adjustment in the field.
The model 1950 thermocouple switch is a low cost switch for
applications where the prevention of over temperature is critical.
It can be
used on ovens, kilns or anywhere where it is necessary prevent temperature
runaway in the case of the normal temperature controller failing. Under normal
operation the onboard relay is energised. In the event of over temperature the
relay de energises. This can be used to shut down the equipment.
Three units are currently available. Type J 600°c, Type K
1300°c and Type N 1250°c. These are factory set to prevent them from being
tampered with on site. Other temperature setting can be supplied to customer
order.
This unit is designed in South Africa using
high quality components this in turn makes it highly reliable with good
accuracy and repeatability.
The model 2402 is a 24V DC
stabilised power supply designed to power one or two 4-20mA current loops
depending on the option selected.
Designed and manufactured in
South Africa. This power supply is made
using high quality components making it very reliable with good accuracy and stability.
The standard output is 24V DC.
A 10V DC 50mA option is available for use with load cells. The circuit has a
current limiting design, which is designed to withstand a continuous short
circuit on the output.
The power supply is housed in
a industry standard plastic, 11-pin housing for ease of mounting and electrical
connections. The front of the box has an LED indicating power on.