Conductive Probe Level Control Relay 24VAC
The MOD-W-1 is a DIN Rail mount liquid level control relay powered from 24 VAC. It features adjustable sensitivity and time delay from 0.1 to 10 sec. SPCO output with selectable pump up or pump down modes as well as relay proving function.
The MOD-W-1 uses a two or three prong conductive probe to control the level of liquid in a tank or other storage container.
The unit is a transformer based conductive probe level control relay, hence available in dedicated AC voltages only. The sensitivity is adjustable from 2 to 100 kΩ, via the on-board potentiometer. Another potentiometer enables the user to adjust the delay on the tripping timer from 0.1 to 10 secs to prevent false activation from liquid movement.The probe supply from the MOD-W1 is an isolated 20 VAC @ 2 mA. The MOD-W1 will work successfully with cables up to 200 m from the probes.
It also features an eight-way function switch (designated A to H) that allows user to switch between "pump up" & "pump down" modes along with a relay proving function "permanent on" or "permanent off". The switch will also determine how the adjustable time delay will function.
The function positions are as follow:
- A: Pump up, delay on energisation & de-energisation
- B: Pump down, delay on energisation & de-energisation
- C: Pump up, delay on energisation
- D: Pump down, delay on energisation
- E: Pump up, delay on de-energisation
- F: Pump down, delay on de-energisation
- G: Relay proving, permanent on
- H: Relay proving, permanent off
Function explanation:
- Regulation of two levels - pump down mode: The relay energises when the high level probe is reached and de-energises when the level falls below the low level probe.
- Regulation of two levels - pump up mode: The relay de-energises when the high level probe is reached and energises when the level falls below the low level probe.
- Regulation of one level - pump down mode: Connect the maximum and the common terminals together. In this case, only a single probe is used and the relay operates when the probe is immersed.
A common reference is always required, if the vessel/tank is conductive the chassis of the tank or vessel will suffice. If the vessel/tank is not conductive a third probe is required to act as the comment reference, which has our SKU: NTS-050
- Power Supply: 24 VAC
- Isolation: 2.5 kV @50 Hz
- Power consumption: 3 VA
- Sensitivity Range: Adjustable 2 to 100 kΩ
- Delay on tripping time: Adjustable 0.1 to 10 s
- Probe Supply: 20 VAC
- Max Probe Current: 2 mA
- SPCO Output: 8 A @250 VAC
- Max Breaking Capacity: 2 kVA
- Mechanical life: 30 Million ops
- Electrical life: 200 K ops at max rated load
- Operating temperature: -20 to 40 °C
- Storage temperature: -20 to 60 °C
- Max cable size: 2.5 mm
- CE marked: Yes
- In accordance with: EN61000-6-1: 2007, EN61000-6-3: 2007, EN61010-1: 2002
- Housing material: Thermo plastic ABS (DIN7728)
- Extinguishable according to UL94VO
- Manufacturer's Part: MOD-W-1
Dispatch
In-stock orders are dispatched within 2 business days.
Shipping options
We deliver across Australia and internationally by any of the following methods:
- Australia Post Express
- Australia Post Parcel Post
- DHL
- FedEx (only international)
- Freight account. We'll email packaging dimensions when the shipment is ready to be book.
*Transit times vary depending on the shipping method and destination.
Store Pickup - Carrum Downs, Victoria, 3201
Order before 11am to collect after 2pm the same day. Mon–Fri, 9am–5pm, excludes public holidays.
RETURNS
How to return an item Contact us before sending anything back. Email info@oceancontrols.com.au or call +61 3 9708 2390. We'll confirm eligibility and guide you to the return process.
Return window 14 days from dispatch date.
Condition required Items must be unused and in original packaging, including all documentation and manuals.
Restocking fee A 20% restocking fee applies to all accepted returns. Return shipping costs are the customer's responsibility.
Non-returnable items
- Custom-made or specially imported products
- Software licences (some software have trial versions available)
- Items not in original, as-new condition
WARRANTY
How to make a warranty claim Before returning anything, please contact us. Our engineers can often resolve the issue remotely. If a return is required, our team will provide you with a warranty form to include with the goods.
What's covered Defects in materials and workmanship under normal use and correct installation.
What's not covered The warranty does not cover damage or failures caused by factors outside our control, including incorrect installation, unauthorised alterations or modifications, or any installation or use not recommended by the manufacturer.
Standard warranty All products carry a 12-month warranty from the date of purchase unless stated otherwise.
Extended warranty
- Labjack: 5 Years
- Atop: 5 Years
- MeanWell: 3 Years
- Teracom: 3 Years
- Novus: 3 Years
