--- product_id: 389126794 title: "- RTD Temperature Calibrator for Field Temperature Indicators, Temperature Controllers, PID Controllers, Flameproof Temperature Indicators Model: AI-CAL-404" brand: "ace instruments" price: "£120.42" currency: GBP in_stock: true reviews_count: 1 category: "Ace Instruments" url: https://www.desertcart.co.uk/products/389126794-rtd-temperature-calibrator-for-field-temperature-indicators-temperature-controllers-pid store_origin: GB region: United Kingdom --- # Backlit LCD Display 12-Way Rotary Knob ±0.3°C Accuracy - RTD Temperature Calibrator for Field Temperature Indicators, Temperature Controllers, PID Controllers, Flameproof Temperature Indicators Model: AI-CAL-404 **Brand:** ace instruments **Price:** £120.42 **Availability:** ✅ In Stock ## Summary > 🌟 Calibrate Like a Pro — Precision Meets Portability! ## Quick Answers - **What is this?** - RTD Temperature Calibrator for Field Temperature Indicators, Temperature Controllers, PID Controllers, Flameproof Temperature Indicators Model: AI-CAL-404 by ace instruments - **How much does it cost?** £120.42 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/389126794-rtd-temperature-calibrator-for-field-temperature-indicators-temperature-controllers-pid) ## Best For - ace instruments enthusiasts ## Why This Product - Trusted ace instruments brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Control:** Navigate 12 distinct temperature steps via a high-quality gold-plated rotary switch for seamless field adjustments. - • **Always Ready, Always On:** Automatic power on/off function maximizes efficiency and battery life, so you’re never caught off guard. - • **Precision You Can Trust:** Achieve ultra-accurate temperature calibration with ±0.3°C accuracy, ensuring your instruments never miss a beat. - • **Versatile Compatibility:** Supports direct TC & RTD output and loop power, making it the ultimate tool for calibrating temperature controllers, indicators, and PID systems. - • **Clear Visibility Anywhere:** Backlit LCD screen guarantees easy reading in any lighting condition, perfect for on-site professionals. ## Overview The Ace Instruments AI-CAL-404 RTD Temperature Calibrator is a compact, field-ready device designed for precise calibration of temperature indicators, controllers, and PID systems. Featuring ±0.3°C accuracy, a 12-way gold-plated rotary switch, and a backlit LCD, it offers reliable performance and ease of use. Its automatic power management and broad compatibility make it an essential tool for professionals demanding accuracy and efficiency in temperature calibration. ## Description RTD Temperature Calibrator for Field Temperature Indicators, Temperature Controllers, PID Controllers, Flameproof Temperature Indicators Model: AI-CAL-404 : desertcart.in: Industrial & Scientific Review: Simple RTD simulator that is easy to use. Description indicated it would come with a calibration certificate and manual. It did not. Reached out to Seller, but got a response thru desertcart that the Seller could not be contacted. For the price, did not think a calibration certificate would actually come but it was advertised that way ## Features - Manufacturer: Ace Instruments | Model No: CAL-404 - Features: Direct TC & RTD Output | DC Current .001 mA Resolution | Back Light LCD | Relative Range Selection 25% to 100% | Loop Power | Automatic Power On/Off Function | - Accuracy: +/-0.3 Deg.C | Type: 12 WAY KNOB TYPE RTD SIMULATOR, 3 WIRE TYPE | - Temperature Steps (Deg.C) : -100, -50, -25, 0, 25, 50, 100, 150, 200, 250, 300, 400 Deg. C | Rotary Switch: High Quality Gold Plated Contacts| Dimensions: 48 X 48 X 70(L X B X D in mm.) - Supply Scope: 1 Unit of RTD Calibrator Instruction Manual and Calibration Certificate | Applications: To calibrate temperature indicators, temperature controllers, data loggers & various field instruments & monitors - RTD Calibrator | RTDPT100 Calibrator | RTD Temperature Calibrator Simulator | Portable Calibrator | Field Temperature Calibrator Indicator | RTD Comparator | PID Temperature Controller ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08QHZTMXV | | Are batteries included? | No | | Best Sellers Rank | #253,291 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,551 in Temperature Controllers | | Brand | Ace Instruments | | Country of Origin | India | | Customer Reviews | 3.0 3.0 out of 5 stars (1) | | Date First Available | 30 November 2021 | | Item Dimensions LxWxH | 7 x 4.8 x 7 Centimeters | | Item Height | 7 Centimeters | | Item Weight | 250 g | | Item Width | 48 Millimeters | | Item part number | IK-Hold-CAL-404 | | Manufacturer | Ace Instruments | | Number of Memory Sticks | 1 | | Product Dimensions | 7 x 4.8 x 7 cm; 250 g | ## Product Details - **Brand:** Ace Instruments - **Display Type:** LCD with backlight - **Item Weight:** 250 Grams - **Manufacturer:** Ace Instruments ## Images ![- RTD Temperature Calibrator for Field Temperature Indicators, Temperature Controllers, PID Controllers, Flameproof Temperature Indicators Model: AI-CAL-404 - Image 1](https://m.media-amazon.com/images/I/61tf2xxjgEL.jpg) ![- RTD Temperature Calibrator for Field Temperature Indicators, Temperature Controllers, PID Controllers, Flameproof Temperature Indicators Model: AI-CAL-404 - Image 2](https://m.media-amazon.com/images/I/51Jv6vsF4ML.jpg) ![- RTD Temperature Calibrator for Field Temperature Indicators, Temperature Controllers, PID Controllers, Flameproof Temperature Indicators Model: AI-CAL-404 - Image 3](https://m.media-amazon.com/images/I/51jQErKwcEL.jpg) ![- RTD Temperature Calibrator for Field Temperature Indicators, Temperature Controllers, PID Controllers, Flameproof Temperature Indicators Model: AI-CAL-404 - Image 4](https://m.media-amazon.com/images/I/51ebDTEkXvL.jpg) ![- RTD Temperature Calibrator for Field Temperature Indicators, Temperature Controllers, PID Controllers, Flameproof Temperature Indicators Model: AI-CAL-404 - Image 5](https://m.media-amazon.com/images/I/51j-JmBDLML.jpg) ## Customer Reviews ### ⭐⭐⭐ Review *by J***S on 18 August 2023* Simple RTD simulator that is easy to use. Description indicated it would come with a calibration certificate and manual. It did not. Reached out to Seller, but got a response thru Amazon that the Seller could not be contacted. For the price, did not think a calibration certificate would actually come but it was advertised that way --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/389126794-rtd-temperature-calibrator-for-field-temperature-indicators-temperature-controllers-pid](https://www.desertcart.co.uk/products/389126794-rtd-temperature-calibrator-for-field-temperature-indicators-temperature-controllers-pid) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-04*